docs: Update Gitter room link in readme #203

Job	Run time
quality	15s
tests (ubuntu-latest, 3.8, highest)	14s
tests (ubuntu-latest, 3.8, lowest-direct)	17s
tests (ubuntu-latest, 3.9, highest)	13s
tests (ubuntu-latest, 3.9, lowest-direct)	10s
tests (ubuntu-latest, 3.10, highest)	11s
tests (ubuntu-latest, 3.10, lowest-direct)	14s
tests (ubuntu-latest, 3.11, highest)	18s
tests (ubuntu-latest, 3.11, lowest-direct)	16s
tests (ubuntu-latest, 3.12, highest)	11s
tests (ubuntu-latest, 3.12, lowest-direct)	12s
tests (ubuntu-latest, 3.13, highest)	28s
tests (ubuntu-latest, 3.13, lowest-direct)	27s
tests (macos-latest, 3.8, highest)	43s
tests (macos-latest, 3.9, highest)	20s
tests (macos-latest, 3.10, highest)	14s
tests (macos-latest, 3.11, highest)	14s
tests (macos-latest, 3.12, highest)	14s
tests (macos-latest, 3.13, highest)	51s
tests (windows-latest, 3.8, highest)	1m 1s
tests (windows-latest, 3.9, highest)	1m 42s
tests (windows-latest, 3.10, highest)	1m 26s
tests (windows-latest, 3.11, highest)	1m 24s
tests (windows-latest, 3.12, highest)	51s
tests (windows-latest, 3.13, highest)	2m 22s
	14m 48s

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