Rename variables correctly

[ElizabethOkerio]

Issues

This pull request fixes #xxx.

Description

This PR renames variables using camel-casing.

Checklist (Uncheck if it is not completed)

• [ ] Test cases added
• [ ] Build and test with one-click build and test script passed

Additional work necessary

If documentation update is needed, please add "Docs Needed" label to the issue and provide details about the required document change in the issue.

[gathogojr]

Did an expanded search for "async (Json" and found cases in ODataJsonBatchReaderTests, ODataJsonBatchWriterTests, ODataJsonCollectionDeserializerTests, ODataJsonCollectionReaderTests, ODataJsonCollectionSerializerTests, ODataJsonCollectionWriterTests, ODataJsonDeltaWriterTests, ODataJsonDeserializerTests, ODataJsonErrorDeserializerTests, ODataJsonOutputContextTests, ODataJsonParameterDeserializerTests, ODataJsonParameterWriterTests, ODataJsonPayloadKindDetectionDeserializerTests, ODataJsonPropertySerializerAsyncTests, ODataJsonSerializerTests, ODataJsonServiceDocumentDeserializerTests, ODataJsonWriterTests, ODataEntityReferenceLinkTests

[gathogojr]

"Search for "var Json" to find more cases

[gathogojr]

Other cases to search for and fix:

• "JsonReader JsonReader,"
• "ODataJsonDeltaReader JsonDeltaReader,"
• "ODataJsonOutputContext JsonOutputContext ="
• "ODataJsonParameterReader JsonParameterReader,"
• "ODataJsonReader JsonReader,"
• "private ODataJsonValueSerializer JsonValueSerializer;"
• "ODataJsonValueSerializer JsonValueSerializer ="

[gathogojr]

Look for "jsoResourceDeserializer" and replace it with "jsonResourceDeserializer"