docs: explain that git-tag-version=false does not commit

[wraithgar]

Closes #3710

[npm-robot]

no statistically significant performance changes detected

timing results

app-large	clean	lock-only	cache-only	cache-only peer-deps	modules-only	no-lock	no-cache	no-modules	no-clean	no-clean audit
npm@8	45.338 ±0.95	27.278 ±0.14	15.738 ±0.19	17.542 ±0.80	2.580 ±0.01	2.631 ±0.12	2.115 ±0.03	9.902 ±0.13	2.073 ±0.08	2.993 ±0.07
#4574	44.497 ±0.50	25.552 ±0.09	15.161 ±0.42	17.849 ±1.43	2.610 ±0.13	2.524 ±0.00	2.043 ±0.03	9.813 ±0.02	1.986 ±0.01	3.357 ±0.52

app-medium	clean	lock-only	cache-only	cache-only peer-deps	modules-only	no-lock	no-cache	no-modules	no-clean	no-clean audit
npm@8	32.613 ±0.82	19.951 ±0.08	11.186 ±0.24	12.374 ±0.15	2.262 ±0.05	2.279 ±0.00	2.005 ±0.04	7.134 ±0.06	1.860 ±0.01	2.671 ±0.00
#4574	33.283 ±0.62	20.522 ±0.02	11.062 ±0.05	12.146 ±0.46	2.292 ±0.02	2.229 ±0.01	2.027 ±0.01	7.489 ±0.08	1.886 ±0.00	2.718 ±0.05