Step 1-3

[Lua-Matlab-Python-R-J2EE]

Step 1. In the main branch Edit the docs/_sidebar.md file.
Step 2. Correct the spelling of the reference (doc-references__.md) on line 4 by changing it into (doc-references.md).
Step 3. Select or create a new branch fix-sidebar for this commit and start a pull request.

In step 1, it says to make changes in the main branch, but in step 3, it asks to create or select a new branch (e.g., fix-sidebar) for the commit. That seems contradictory — if I opened and made changes in the main branch, how can I then commit those changes to a different branch? I'm a bit confused — what am I missing? Thank you