Fix typos in README.md

[danny-andrews]

Q	A
Patch: Bug Fix?	no
Major: Breaking Change?	no
Minor: New Feature?	no
Deprecations?	no
Spec Compliancy?	yes
Tests Added/Pass?	yes
Fixed Tickets	n/a
License	MIT
Doc PR	yes
Dependency Changes	no

[mention-bot]

@danny-andrews, thanks for your PR! By analyzing the history of the files in this pull request, we identified @xtuc, @trodrigues and @hzoo to be potential reviewers.

[codecov]

Codecov Report

Merging #5857 into master will decrease coverage by 0.02%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #5857      +/-   ##
==========================================
- Coverage   84.76%   84.74%   -0.03%     
==========================================
  Files         204      204              
  Lines        9608     9608              
  Branches     2702     2702              
==========================================
- Hits         8144     8142       -2     
- Misses        980      982       +2     
  Partials      484      484

Impacted Files	Coverage Δ
packages/babel-traverse/src/visitors.js	85.71% <0%> (-0.96%)	⬇️
...bel-plugin-transform-es2015-classes/src/vanilla.js	89.74% <0%> (-0.43%)	⬇️

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[danny-andrews]

So much for skipping CI, lol.

[existentialism]

@danny-andrews thanks! (I made an additional small tweak)

[hzoo]

Oh, FYI just the commit needs the [skip ci] not the title