[SPARK-50295][DOCS][FOLLOWUP] Document build-docs in docs/README.md
#664
| Job | Run time |
|---|---|
| 33m 40s | |
| 33m 40s |
build-docs in docs/README.md
#664
| Job | Run time |
|---|---|
| 33m 40s | |
| 33m 40s |