docs: Fix grammatical error Update README.md #9112

Job	Run time
Protobuf Backward Compatibility	9s
Backward Compatibility	11m 4s
Cargo Nextest (Linux)	10m 16s
Database Migration	11m 36s
Cargo Nextest (Linux Nightly)	13m 10s
Genesis Changes	9m 55s
Sanity Checks	6m 38s
Style	40s
Upgradability	11m 55s
Cargo Audit	18s
Cargo Clippy	9m 20s
Cargo Deny	32s
Cargo Fmt	24s
Non-default Configuration Builds	1m 14s
Themis	38s
Unused Dependencies	7m 8s
Rust Doctests	11m 58s
Protocol Schema	13m 42s
Cargo check publishable packages separately (Linux, linux, ubuntu-latest)	8m 4s
Cargo check publishable packages separately (Windows, win, windows-latest)	2m 46s
Upload Coverage	18s
Generate Coverage Artifact (unit, unit)	2m 42s
	2h 14m 27s

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