DOC: Fix grammar in AUTHORS.md #24102

Job	Run time
Linux-32-bit	18m 25s
python-dev	0s
Linux-Musl	15m 35s
Pyodide build	23m 1s
macos-13 actions-311.yaml	27m 40s
macos-13 actions-312.yaml	24m 6s
macos-13 actions-313.yaml	32m 51s
macos-14 actions-311.yaml	20m 26s
macos-13 actions-310.yaml	34m 0s
macos-14 actions-312.yaml	17m 55s
windows-latest actions-313.yaml	42m 59s
macos-14 actions-310.yaml	18m 49s
macos-14 actions-313.yaml	22m 41s
windows-latest actions-310.yaml	33m 51s
windows-latest actions-311.yaml	37m 54s
windows-latest actions-312.yaml	37m 44s
Pypy	1m 13s
ubuntu-24.04 actions-312.yaml	44m 4s
ubuntu-24.04-arm actions-313.yaml	34m 13s
Numpy Dev	16m 9s
ubuntu-24.04 actions-311.yaml	42m 9s
Pyarrow Nightly	19m 55s
ubuntu-24.04-arm actions-310.yaml	35m 33s
Freethreading	20m 52s
ubuntu-24.04-arm actions-311.yaml	35m 1s
ubuntu-24.04 actions-313.yaml	47m 55s
Minimum Versions	22m 58s
ubuntu-24.04-arm actions-312.yaml	34m 44s
Downstream Compat	5m 11s
Future infer strings	45m 34s
ubuntu-24.04 actions-310.yaml	46m 32s
Locale: it_IT	24m 6s
Locale: zh_CN	23m 31s
Future infer strings (without pyarrow)	39m 13s
	15h 46m 50s

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