docs: update coroutine references in README

[cyodrew]

Fix function names in docs

New Pull Request Checklist

• [ x] I am not disclosing a vulnerability.
• I am creating this PR in reference to an issue.

Issue Description

Updates README to correct referenced functions

Related issue: N/A

Approach

N/A

TODOs before merging

• Add tests
• Add changes to documentation (guides, repository pages, in-code descriptions)
• A changelog entry is created automatically using the pull request title (do not manually add a changelog entry)

[parse-github-assistant]

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[parse-github-assistant]

I will reformat the title to use the proper commit message syntax.

[codecov]

Codecov Report

Merging #1154 (0a8b274) into master (6fad701) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master    #1154   +/-   ##
=========================================
  Coverage     66.81%   66.81%           
  Complexity     2249     2249           
=========================================
  Files           121      121           
  Lines          9892     9892           
  Branches       1332     1332           
=========================================
  Hits           6609     6609           
  Misses         2771     2771           
  Partials        512      512           

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[parseplatformorg]

🎉 This change has been released in version 3.0.1