### What this PR does / why we need it? add doc for patch_config ### Does this PR introduce _any_ user-facing change? No ### How was this patch tested? No code changed. Signed-off-by: Shuqiao Li <celestialli@outlook.com>
### What this PR does / why we need it? add doc for patch_config ### Does this PR introduce _any_ user-facing change? No ### How was this patch tested? No code changed. Signed-off-by: Shuqiao Li <celestialli@outlook.com>