Add space to JSDoc attributes

[vrana]

I select text using double click a lot - it selects whole words so that I don't need to be that precise in selecting the beginning of a word and the end of it. The words are delimited by a space, not by visual look. If I try to select e.g. Cesium.Cartographic.ZERO in the Cesium docs using this method then it results in staticconstantCesium.Cartographic.ZERO being selected because there are no spaces after static and constant. This commit adds the spaces there.

Tested: jsdoc -c Tools/jsdoc/conf.json

[cesium-concierge]

Thanks for the pull request @vrana!

• ✔️ Signed CLA found.
• ❔ CHANGES.md was not updated.
  • If this change updates the public API in any way, please add a bullet point to CHANGES.md.
• ❔ Unit tests were not updated.
  • Make sure you've updated tests to reflect your changes, added tests for any new code, and ran the code coverage tool.

Reviewers, don't forget to make sure that:

• Cesium Viewer works.
• Works in 2D/CV.
• Works (or fails gracefully) in IE11.

[mramato]

Thanks!