docs: update `README.md` fix sentence spaces

[jbampton]

• [ ] I have registered the PR changes.

Ⅰ. Describe what this PR did

Ⅱ. Does this pull request fix one issue?

Ⅲ. Why don't you add test cases (unit test/integration test)?

Ⅳ. Describe how to verify it

Ⅴ. Special notes for reviews

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 50.73%. Comparing base (f7c3866) to head (f19c569). Report is 21 commits behind head on 2.x.

Additional details and impacted files

@@             Coverage Diff              @@
##                2.x    #6753      +/-   ##
============================================
+ Coverage     50.57%   50.73%   +0.15%     
- Complexity     5936     5952      +16     
============================================
  Files          1061     1061              
  Lines         37123    37123              
  Branches       4404     4404              
============================================
+ Hits          18776    18835      +59     
+ Misses        16445    16380      -65     
- Partials       1902     1908       +6     

see 10 files with indirect coverage changes

[xingfudeshi]

@jbampton Hi!Please register your PR in changes