documentation

Pull request #2410: feature/ZBX-25745-7.3-D. profiling excessive memory usage with tcmalloc.

Merge in WEB/documentation from feature/ZBX-25745-7.3-D to release/7.4

* commit '215ca07a5eefbfc0e9c10500d4a46938eb335aae':
  [ZBX-25745] updated formatting
  [ZBX-25745] added related problem report to "See also" section
  [ZBX-25745] fixed blockID
  [ZBX-25745] profiling excessive memory usage with tcmalloc
  added missing bracket