Update weidentity-java-sdk-doc.rst

[VictorLyl]

Correct clerical errors.

Summary

• Concisely describe the issue and your solution:
• Link to existing issue (type "#" to check):
• Specify the tests done so far:

Solutions (Optional)

Please describe the details of your solution if it might be too complicated for reviewers.

[VictorLyl]

Correct clerical errors.