Corrected english mistakes in documentation files #656

Job	Run time
conda install (ubuntu-22.04)	2m 42s
Unit tests (ubuntu-22.04, 3.10)	16m 45s
conda install latest tensorflow (ubuntu-22.04)	4m 21s
Build documentation	2m 37s
Unit tests (macos-latest, 3.11)	9m 4s
Compatibility Testing (ubuntu-20.04, 3.6)	14m 32s
Test uproot3 (ubuntu-22.04, 3.10)	17m 2s
Style checks	2m 16s
Unit tests (ubuntu-22.04, 3.7)	15m 51s
Unit tests (ubuntu-22.04, 3.11)	17m 2s
Coverage (ubuntu-22.04, 3.10)	35s
	1h 42m 47s

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