fix: typos in documentation files

[vtjl10]

This pull request contains changes to improve clarity, correctness and structure.

Description correction:
Corrected previos to previous
Corrected propogate to propagate
Corrected Not to Note and also correct link

Please review the changes and let me know if any additional changes are needed.

[CLAassistant]

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[philknows]

Closing in reference to our contribution policy:

Please note that trivial, non-code contributions such as spelling, grammar, typos, corrections, comments and link fixes are not acceptable pull requests. Although we appreciate the effort to fix these valid concerns, it is not practical for us to run our CI systems to accommodate minor external contributions which generate minimal value for the purpose of contribution/airdrop farming. It would be appreciated for you to open up an issue instead for our team to aggregate these types of contributions into a batch commit.