Align endpoint Javadoc layout

[weppos]

This change gives the Javadoc of all public endpoint methods one layout. The @param names are aligned, the @param and @return text starts with a capital letter, no blank line comes before @return, and @see is the last tag. The @return text names the response in the same word order as the method name, and listCharges now has its missing @param and @return tags.

🔍 QA

• The test suite passes.

📋 Deployment Pre/Post tasks

None.

Deployment Verification

• QAd