Fixing small typos

[bthaqi]

There are a few typos in English. A few small fixes are included.

[codecov]

Codecov Report

Merging #162 into master will decrease coverage by 0.08%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #162      +/-   ##
==========================================
- Coverage   96.55%   96.46%   -0.09%     
==========================================
  Files          14       14              
  Lines        1075     1076       +1     
==========================================
  Hits         1038     1038              
- Misses         37       38       +1

Impacted Files	Coverage Δ
jose/jwk.py	93.97% <100%> (-1.15%)	⬇️

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[blag]

Please fix the merge conflicts, but otherwise this looks good.

[blag]

Thanks!

[bthaqi]

Sure! Thank you too! :)

…

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