docs(plugins): clarification, fix typos and style

source/plugins/isocalendar/metadata.yml

@@ -1,6 +1,7 @@
-name: "📅 Isometric commit calendar"
+name: 📅 Isometric commit calendar
 category: github
-description: This plugin displays an isometric view of your commit calendar along with a few additional statistics like current streak and average number of commit per day.
+description: |
+  This plugin displays an isometric view of a user commit calendar along with a few additional statistics like current streak and average number of commit per day.
 examples:
   +full year calendar: https://github.com/lowlighter/metrics/blob/examples/metrics.plugin.isocalendar.fullyear.svg
   half year calendar: https://github.com/lowlighter/metrics/blob/examples/metrics.plugin.isocalendar.svg
@@ -12,13 +13,15 @@ scopes:
 inputs:
 
   plugin_isocalendar:
-    description: Enable isocalendar plugin
+    description: |
+      Enable isocalendar plugin
     type: boolean
     default: no
 
   plugin_isocalendar_duration:
     description: |
       Time range
+
       - `half-year`: 180 days
       - `full-year`: 1 year
     type: string