Corrected english mistakes in documentation files #658

Job	Run time
Unit tests (ubuntu-22.04, 3.10)	16m 4s
conda install latest tensorflow (ubuntu-22.04)	4m 14s
conda install (ubuntu-22.04)	2m 43s
Build documentation	2m 14s
Unit tests (macos-latest, 3.11)	9m 41s
Test uproot3 (ubuntu-22.04, 3.10)	16m 34s
Compatibility Testing (ubuntu-20.04, 3.6)	17m 5s
Unit tests (ubuntu-22.04, 3.7)	16m 2s
Style checks	2m 38s
Unit tests (ubuntu-22.04, 3.11)	16m 35s
Coverage (ubuntu-22.04, 3.10)	37s
	1h 44m 27s

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