Update SignalR Java client docs

[mikaelm12]

Generate updated SignalR Java docs

[EdisonDa]

Docs Build status updates of commit ba7636b:

❌ Validation status: errors

Please follow instructions here which may help to resolve issue.

File	Status	Preview URL	Details
	❌Error		Details
	❌Error		Details

• Line 81: [Error] W:\r2kj-s.optemp\packages\opbuild.scripts.1.72.0\tools\opbuild\plugin.executor.ps1 failed to execute customized script in the plugin step docset_prebuild in the docset SignalR_Java
• Line 138: [Error] W:\r2kj-s.optemp\packages\opbuild.scripts.1.72.0\tools\opbuild\docset.prebuild.ps1 failed to execute
• Line 215: [Error] Error happened to execute the task _dependentPackages/CommonPlugins/tools/DiffFolder.ps1
• Line 87: [Warning] Failed to run script W:\r2kj-s_dependentPackages\CommonPlugins\tools\DiffFolder.ps1 with error message: Argument $output should not be null or empty.Exception.Message.

• Line 81: [Error] W:\r2kj-s.optemp\packages\opbuild.scripts.1.72.0\tools\opbuild\plugin.executor.ps1 failed to execute customized script in the plugin step docset_prebuild in the docset SignalR_Java
• Line 138: [Error] W:\r2kj-s.optemp\packages\opbuild.scripts.1.72.0\tools\opbuild\docset.prebuild.ps1 failed to execute
• Line 215: [Error] Error happened to execute the task _dependentPackages/CommonPlugins/tools/DiffFolder.ps1
• Line 87: [Warning] Failed to run script W:\r2kj-s_dependentPackages\CommonPlugins\tools\DiffFolder.ps1 with error message: Argument $output should not be null or empty.Exception.Message.

For more details, please refer to the build report.

Note: If you changed an existing file name or deleted a file, broken links in other files to the deleted or renamed file are listed only in the full build report.

[bradygaster]

cc @dend - any suggestions on how to resolve this? Is it something in the way we'e feeding the process in our files, or is something awry on the OPS side?