fix: fix link (#21)

Author: twishabansal

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -32,7 +32,7 @@ body:
         - Search the [current open issues](https://github.com/googleapis/mcp-toolbox-sdk-js/issues)
         - Update to the [latest version of
         Toolbox](https://github.com/googleapis/genai-toolbox/releases)
-        - Update to the [latest version of the SDK](https://github.com/googleapis/mcp-toolbox-sdk-js/CHANGELOG.md).
+        - Update to the [latest version of the SDK](https://github.com/googleapis/mcp-toolbox-sdk-js/tree/main/CHANGELOG.md).
       options: 
         - label: "I've searched the current open issues"
           required: true
@@ -121,4 +121,4 @@ body:
       label: Additional Details
       description: |
         Any other information you want us to know? Things such as tools config,
-        server logs, etc. can be included here.
+        server logs, etc. can be included here.