Remove words I accidentally left in the README.md with my previous commits

[chappy84]

Apologies, I left the word "what" on these two lines when I raised my PR yesterday. I've now removed these.
I've also made the comments align to the end of the lines as they do in the rest of this section.

[codecov]

Codecov Report

Base: 50.97% // Head: 45.84% // Decreases project coverage by -5.13% ⚠️

Coverage data is based on head (4398de9) compared to base (a520dc3).
Patch has no changes to coverable lines.

Additional details and impacted files

@@             Coverage Diff              @@
##              6.1.x    #2764      +/-   ##
============================================
- Coverage     50.97%   45.84%   -5.14%     
============================================
  Files          1820     1754      -66     
  Lines         68002    64524    -3478     
  Branches      30718    30718              
============================================
- Hits          34661    29578    -5083     
- Misses        33341    34946    +1605     

Flag	Coverage Δ
full	45.84% <ø> (ø)
lite	?
phpunit	?
standard	?

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...r-agents/browsers/seamonkey/seamonkey-generic.json	10.95% <0.00%> (-67.13%)	⬇️
...ser-agents/browsers/chrome/chrome-ios-generic.json	0.00% <0.00%> (-60.00%)	⬇️
...-agents/email-clients/yahoo/yahoo-mobile-mail.json	50.00% <0.00%> (-50.00%)	⬇️
resources/user-agents/apps/salesforce-app.json	44.44% <0.00%> (-44.45%)	⬇️
...ents/apps/sohu-news-app/sohu-news-app-android.json	44.44% <0.00%> (-44.45%)	⬇️
...s/browsers/tizen-browser/tizen-browser-2-1-on.json	44.44% <0.00%> (-44.45%)	⬇️
...ents/browsers/mobile-safari/mobile-safari-3-1.json	58.33% <0.00%> (-41.67%)	⬇️
...es/user-agents/browsers/chrome/chrome-generic.json	22.50% <0.00%> (-41.67%)	⬇️
...ources/user-agents/apps/rocky-chatwork-mobile.json	41.66% <0.00%> (-41.67%)	⬇️
.../browsers/mqq-browser/mqq-browser-mini-2-2-on.json	60.00% <0.00%> (-40.00%)	⬇️
... and 544 more

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