diff --git a/README.md b/README.md
index d0e27c61..a1e36aae 100644
--- a/README.md
+++ b/README.md
@@ -83,8 +83,8 @@ Generate metrics that can be embedded everywhere, including your GitHub profile
       </td>
         <td  align="center">
         <details open><summary>Indepth analysis</summary><img alt="" width="400" src="https://github.com/lowlighter/metrics/blob/examples/metrics.plugin.followup.indepth.svg" alt=""></img></details>
-        <details><summary>Created on an user's repositories</summary><img alt="" width="400" src="https://github.com/lowlighter/metrics/blob/examples/metrics.plugin.followup.svg" alt=""></img></details>
-        <details><summary>Created by an user</summary><img alt="" width="400" src="https://github.com/lowlighter/metrics/blob/examples/metrics.plugin.followup.user.svg" alt=""></img></details>
+        <details><summary>Created on a user's repositories</summary><img alt="" width="400" src="https://github.com/lowlighter/metrics/blob/examples/metrics.plugin.followup.svg" alt=""></img></details>
+        <details><summary>Created by a user</summary><img alt="" width="400" src="https://github.com/lowlighter/metrics/blob/examples/metrics.plugin.followup.user.svg" alt=""></img></details>
         <img width="900" height="1" alt="">
       </td>
   </tr>
@@ -98,7 +98,7 @@ Generate metrics that can be embedded everywhere, including your GitHub profile
         <img width="900" height="1" alt="">
       </td>
         <td  align="center">
-        <details open><summary>Related to an user</summary><img alt="" width="400" src="https://github.com/lowlighter/metrics/blob/examples/metrics.plugin.people.followers.svg" alt=""></img></details>
+        <details open><summary>Related to a user</summary><img alt="" width="400" src="https://github.com/lowlighter/metrics/blob/examples/metrics.plugin.people.followers.svg" alt=""></img></details>
         <details><summary>Related to a repository</summary><img alt="" width="400" src="https://github.com/lowlighter/metrics/blob/examples/metrics.plugin.people.repository.svg" alt=""></img></details>
         <img width="900" height="1" alt="">
       </td>
@@ -196,7 +196,7 @@ Generate metrics that can be embedded everywhere, including your GitHub profile
   </tr>
   <tr>
         <td  align="center">
-        <details open><summary>For an user or an organization</summary><img alt="" width="400" src="https://github.com/lowlighter/metrics/blob/examples/metrics.plugin.introduction.svg" alt=""></img></details>
+        <details open><summary>For a user or an organization</summary><img alt="" width="400" src="https://github.com/lowlighter/metrics/blob/examples/metrics.plugin.introduction.svg" alt=""></img></details>
         <details><summary>For a repository</summary><img alt="" width="400" src="https://github.com/lowlighter/metrics/blob/examples/metrics.plugin.introduction.repository.svg" alt=""></img></details>
         <img width="900" height="1" alt="">
       </td>
diff --git a/source/plugins/followup/README.md b/source/plugins/followup/README.md
index 23537776..42c89010 100644
--- a/source/plugins/followup/README.md
+++ b/source/plugins/followup/README.md
@@ -16,8 +16,8 @@
   <tr>
     <td colspan="2" align="center">
       <details open><summary>Indepth analysis</summary><img src="https://github.com/lowlighter/metrics/blob/examples/metrics.plugin.followup.indepth.svg" alt=""></img></details>
-      <details><summary>Created on an user's repositories</summary><img src="https://github.com/lowlighter/metrics/blob/examples/metrics.plugin.followup.svg" alt=""></img></details>
-      <details><summary>Created by an user</summary><img src="https://github.com/lowlighter/metrics/blob/examples/metrics.plugin.followup.user.svg" alt=""></img></details>
+      <details><summary>Created on a user's repositories</summary><img src="https://github.com/lowlighter/metrics/blob/examples/metrics.plugin.followup.svg" alt=""></img></details>
+      <details><summary>Created by a user</summary><img src="https://github.com/lowlighter/metrics/blob/examples/metrics.plugin.followup.user.svg" alt=""></img></details>
       <img width="900" height="1" alt="">
     </td>
   </tr>
diff --git a/source/plugins/introduction/README.md b/source/plugins/introduction/README.md
index 259494f5..b9d2f695 100644
--- a/source/plugins/introduction/README.md
+++ b/source/plugins/introduction/README.md
@@ -16,7 +16,7 @@
   </tr>
   <tr>
     <td colspan="2" align="center">
-      <details open><summary>For an user or an organization</summary><img src="https://github.com/lowlighter/metrics/blob/examples/metrics.plugin.introduction.svg" alt=""></img></details>
+      <details open><summary>For a user or an organization</summary><img src="https://github.com/lowlighter/metrics/blob/examples/metrics.plugin.introduction.svg" alt=""></img></details>
       <details><summary>For a repository</summary><img src="https://github.com/lowlighter/metrics/blob/examples/metrics.plugin.introduction.repository.svg" alt=""></img></details>
       <img width="900" height="1" alt="">
     </td>
diff --git a/source/plugins/people/README.md b/source/plugins/people/README.md
index 92d55f51..0551341c 100644
--- a/source/plugins/people/README.md
+++ b/source/plugins/people/README.md
@@ -15,7 +15,7 @@
   </tr>
   <tr>
     <td colspan="2" align="center">
-      <details open><summary>Related to an user</summary><img src="https://github.com/lowlighter/metrics/blob/examples/metrics.plugin.people.followers.svg" alt=""></img></details>
+      <details open><summary>Related to a user</summary><img src="https://github.com/lowlighter/metrics/blob/examples/metrics.plugin.people.followers.svg" alt=""></img></details>
       <details><summary>Related to a repository</summary><img src="https://github.com/lowlighter/metrics/blob/examples/metrics.plugin.people.repository.svg" alt=""></img></details>
       <img width="900" height="1" alt="">
     </td>