docs: replace links from profile repo to metrics repo [skip ci]

source/templates/classic/README.md

@@ -14,7 +14,7 @@
   </tr>
   <tr>
     <td colspan="2" align="center">
-      <img src="https://github.com/lowlighter/lowlighter/blob/master/metrics.classic.svg" alt=""></img>
+      <img src="https://github.com/lowlighter/metrics/blob/examples/metrics.classic.svg" alt=""></img>
       <img width="900" height="1" alt="">
     </td>
   </tr>

source/templates/classic/metadata.yml

@@ -3,7 +3,7 @@ description: |
   A template mimicking GitHub visual identity.
   This is also the default template.
 examples:
-  default: https://github.com/lowlighter/lowlighter/blob/master/metrics.classic.svg
+  default: https://github.com/lowlighter/metrics/blob/examples/metrics.classic.svg
 index: 0
 supports:
   - user