ci: use missdoc as subcmd (#14524)

Author: larpon

.github/workflows/docs_ci.yml

@@ -35,8 +35,8 @@ jobs:
 
       - name: Check against parent commit
         run: |
-          ./v run cmd/tools/missdoc.v $MOPTIONS | sort > /tmp/n_v.txt
-          cd pv/ && ../v run ../cmd/tools/missdoc.v $MOPTIONS | sort > /tmp/o_v.txt
+          ./v missdoc $MOPTIONS | sort > /tmp/n_v.txt
+          cd pv/ && ../v missdoc $MOPTIONS | sort > /tmp/o_v.txt
           count_new=$(cat /tmp/n_v.txt | wc -l)
           count_old=$(cat /tmp/o_v.txt | wc -l)
           echo "new pubs: $count_new | old pubs: $count_old"