Docs: fix some small issues with SyncManager and ORM docs

[ddenev]

Fixes #1698:

1. updated the SyncManager docs to be more explicit about the pull() method implementation
2. updated the ORM docs to remove static methods

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (284cec4) to head (e920dba).
Report is 2 commits behind head on main.

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff            @@
##              main     #1701   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
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  Files           56        56           
  Lines         1819      1819           
  Branches       419       419           
=========================================
  Hits          1819      1819           

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