fix(templates): fix sips link

Signed-off-by: Vaughn Dice <[email protected]>

Author: vdice

templates/sidebar.hbs

@@ -100,7 +100,7 @@
 
     <a {{#if (active_project request.spin-full-url "/v3/plugin-authoring" )}} class="active" {{/if}} href="{{site.info.base_url}}/v3/plugin-authoring">Creating Spin Plugins</a>
     <a {{#if (active_project request.spin-full-url "/v3/template-authoring" )}} class="active" {{/if}} href="{{site.info.base_url}}/v3/template-authoring">Creating Spin Templates</a>
-    <a href="https://github.com/fermyon/blob/main/docs/content/sips/index.md" target="_blank">Spin Improvement Proposals <img src="{{site.info.base_url}}/static/image/arrowexternal.svg" width="15" height="15"></a>
+    <a href="https://github.com/spinframework/spin/blob/main/docs/content/sips/index.md" target="_blank">Spin Improvement Proposals <img src="{{site.info.base_url}}/static/image/arrowexternal.svg" width="15" height="15"></a>
     <a {{#if (active_project request.spin-full-url "/v3/extending-and-embedding" )}} class="active" {{/if}} href="{{site.info.base_url}}/v3/extending-and-embedding">Custom Triggers</a>
 
     <hr>