Fix webapi semantic memory package ref (#155)

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webapi/nuget.config

@@ -4,12 +4,16 @@
   <packageSources>
     <clear />
     <add key="nuget.org" value="https://api.nuget.org/v3/index.json" />
+    <add key="SemanticMemoryPrivate" value="https://pkgs.dev.azure.com/msctoproj/Lightspeed/_packaging/SemanticMemoryPrivate/nuget/v3/index.json" />
   </packageSources>
 
   <packageSourceMapping>
     <packageSource key="nuget.org">
       <package pattern="*" />
     </packageSource>
+    <packageSource key="SemanticMemoryPrivate">
+      <package pattern="Microsoft.SemanticMemory.*" />
+    </packageSource>
   </packageSourceMapping>
 
 </configuration>