Fix readme through sigs.yaml

Signed-off-by: Anshuman Tripathi <[email protected]>

sig-docs/README.md

@@ -99,9 +99,15 @@ The following [subprojects][subproject-definition] are owned by sig-docs:
 ### reference-docs
 - **Owners:**
   - [kubernetes-sigs/reference-docs](https://github.com/kubernetes-sigs/reference-docs/blob/master/OWNERS)
+### subproject-definition
+- **Owners:**
+  - [kubernetes/community/governance.md#subprojects](https://github.com/kubernetes/community/blob/master/governance.md#subprojects)
 ### website
 - **Owners:**
   - [kubernetes/website](https://github.com/kubernetes/website/blob/master/OWNERS)
+### working-group-definition
+- **Owners:**
+  - [kubernetes/community/governance.md#working-groups](https://github.com/kubernetes/community/blob/master/governance.md#working-groups)
 
 [subproject-definition]: https://github.com/kubernetes/community/blob/master/governance.md#subprojects
 [working-group-definition]: https://github.com/kubernetes/community/blob/master/governance.md#working-groups

sigs.yaml

@@ -1669,9 +1669,15 @@ sigs:
   - name: reference-docs
     owners:
     - https://raw.githubusercontent.com/kubernetes-sigs/reference-docs/master/OWNERS
+  - name: subproject-definition
+    owners:
+    - https://raw.githubusercontent.com/kubernetes/community/master/governance.md#subprojects
   - name: website
     owners:
     - https://raw.githubusercontent.com/kubernetes/website/master/OWNERS
+  - name: working-group-definition
+    owners:
+    - https://raw.githubusercontent.com/kubernetes/community/master/governance.md#working-groups
 - dir: sig-etcd
   name: etcd
   mission_statement: >