Fix casing in YAML language server schema URL to address ValidateV1_1…

…0GoodManifestAndVerifyContents test failure

Corrected the URL in the comment for the YAML language server schema by changing "defaultlocale" to "defaultLocale" to ensure proper casing.

src/AppInstallerCLITests/TestData/MultiFileManifestV1_10/ManifestV1_10-MultiFile-DefaultLocale.yaml

@@ -1,4 +1,4 @@
-# yaml-language-server: $schema=https://aka.ms/winget-manifest.defaultlocale.1.10.0.schema.json
+# yaml-language-server: $schema=https://aka.ms/winget-manifest.defaultLocale.1.10.0.schema.json
 PackageIdentifier: microsoft.msixsdk
 PackageVersion: 1.7.32
 PackageLocale: en-US