Description in `Shell.md` requiring architectural knowledge of CC apps (not suitable for 3P)

https://github.com/AdobeDocs/uxp/blob/47510097aaf62876dfe00a01e00461ce5018e6cc/src/pages/uxp/reference-js/Modules/shell/Shell.md?plain=1#L12-L14

> Information not suitable for 3P as it would require deep knowledge of the architecture of various CC apps (which might be present with experienced 3P devs, but not with beginners)

Reported as part of the code review in #61

Read the linked Shell.md lines 12-14 and the related code review in #61 to understand which description is considered unsuitable for third-party beginners. Decide on a documentation change that removes or replaces the architecture-dependent information, and consider the issue complete when those lines are clear and appropriate for 3P developers.

Written by the indexing model from the issue text.