Align AzureBlobs:Container to chatmemory in memorypipeline's settings (…

…microsoft#1077)

### Motivation and Context
The value for AzureBlobs:Container differs between webapi and
memorypipeline in the appsettings.json file, which prevents the two from
working together.

### Description
Align AzureBlobs:Container to chatmemory in memorypipeline's settings

### Contribution Checklist
- [ ] The code builds clean without any errors or warnings
- [ ] The PR follows the [Contribution
Guidelines](https://github.com/microsoft/chat-copilot/blob/main/CONTRIBUTING.md)
and the [pre-submission formatting
script](https://github.com/microsoft/chat-copilot/blob/main/CONTRIBUTING.md#development-scripts)
raises no violations
- [ ] All unit tests pass, and I have added new tests where possible
- [ ] I didn't break anyone 😄

memorypipeline/appsettings.json

@@ -87,7 +87,7 @@
         "Auth": "ConnectionString",
         //"ConnectionString": "", // dotnet user-secrets set "SemanticMemory:Services:AzureBlobs:ConnectionString" "MY_AZUREBLOB_CONNECTIONSTRING"
         //"Account": "",
-        "Container": "memorypipeline"
+        "Container": "chatmemory"
         //"EndpointSuffix": "core.windows.net"
       },
       //