Removed "React" references

[nblackburn]

Issue:

What I did

Removed React references so it more accurately reflects support for other frameworks.

[codecov]

Codecov Report

Merging #1834 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1834   +/-   ##
=======================================
  Coverage   21.32%   21.32%           
=======================================
  Files         257      257           
  Lines        5739     5739           
  Branches      684      687    +3     
=======================================
  Hits         1224     1224           
- Misses       3995     4009   +14     
+ Partials      520      506   -14

Impacted Files	Coverage Δ
...rc/modules/ui/components/left_panel/text_filter.js	30.98% <0%> (ø)	⬆️
addons/knobs/src/components/types/Number.js	8.06% <0%> (ø)	⬆️
addons/knobs/src/KnobManager.js	32% <0%> (ø)	⬆️
addons/knobs/src/components/PropForm.js	8.51% <0%> (ø)	⬆️
lib/ui/src/modules/ui/routes.js	0% <0%> (ø)	⬆️
lib/ui/src/modules/ui/libs/filters.js	47.36% <0%> (ø)	⬆️
addons/info/src/components/markdown/code.js	24.13% <0%> (ø)	⬆️
addons/knobs/src/components/PropField.js	10.86% <0%> (ø)	⬆️
.../ui/src/modules/ui/components/left_panel/header.js	29.62% <0%> (ø)	⬆️
addons/info/src/components/markdown/htags.js	30% <0%> (ø)	⬆️
... and 17 more

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[ndelangen]

Thank you @nblackburn!, I'm surprised this has one unnoticed for so long.

I'll redeploy end of the day.

[nblackburn]

@ndelangen Haha, i was a surprise to me too!