Update release_apidiff.yml

Author: dotMorten

.github/workflows/release_apidiff.yml

@@ -15,7 +15,7 @@ jobs:
       - name: Set up .NET
         uses: actions/setup-dotnet@v4
         with:
-          dotnet-version: 8.0.x
+          dotnet-version: 10.0.x
 
       - name: Install generator
         run: dotnet tool install --global dotMorten.OmdGenerator
@@ -48,7 +48,7 @@ jobs:
         shell: bash
         run: |
           generateomd \
-            /source=src/WinUIEx/ \
+            /source=src/WinUIEx/WinUIEx.csproj \
             /gitRepo=${{ github.server_url }}/${{ github.repository }} \
             /sourceRef=${{ github.event.release.tag_name }} \
             /compareRef=${{ steps.previous_release.outputs.tag }} \