Change all links in /minutes to not end in .html

* Remove the outline for the 2021-03-20 AGM which were placed there
  temporarily (83b20fe) but never
  removed once the actual minutes were uploaded
  (edd0c7e)

Author: NilsIrl

minutes/agm2021-03-20/index.html

@@ -48,7 +48,7 @@ <h2>Minutes</h2>
     <td>12<sup>th</sup> March 2023</td>
     <td></td>
     <td>
-      <a href="agm2023-03-12.html">Minutes</a>
+      <a href="agm2023-03-12">Minutes</a>
     </td>
     <td></td>
     <td></td>
@@ -58,7 +58,7 @@ <h2>Minutes</h2>
     <td>1<sup>st</sup> March 2023</td>
     <td></td>
     <td>
-      <a href="2023-03-01.html">Minutes</a>
+      <a href="2023-03-01">Minutes</a>
     </td>
     <td></td>
     <td></td>
@@ -68,7 +68,7 @@ <h2>Minutes</h2>
     <td>6<sup>th</sup> March 2022</td>
     <td></td>
     <td>
-      <a href="agm2022-03-06.html">Minutes</a>
+      <a href="agm2022-03-06">Minutes</a>
     </td>
     <td></td>
     <td></td>
@@ -78,7 +78,7 @@ <h2>Minutes</h2>
     <td>18<sup>th</sup> December 2021</td>
     <td></td>
     <td>
-      <a href="2021-12-18.html">Minutes</a>
+      <a href="2021-12-18">Minutes</a>
     </td>
     <td></td>
     <td></td>
@@ -88,7 +88,7 @@ <h2>Minutes</h2>
     <td>11<sup>th</sup> November 2021</td>
     <td></td>
     <td>
-      <a href="2021-11-11.html">Minutes</a>
+      <a href="2021-11-11">Minutes</a>
     </td>
     <td></td>
     <td></td>
@@ -98,7 +98,7 @@ <h2>Minutes</h2>
     <td>20<sup>th</sup> March 2021</td>
     <td></td>
     <td>
-      <a href="agm2021-03-20.html">Minutes</a>
+      <a href="agm2021-03-20">Minutes</a>
     </td>
     <td></td>
     <td></td>