Use "nodoc", not "doc", for the name of the tarball w/o docs.

RELEASE_CHECKLIST.txt

@@ -34,7 +34,7 @@ echo autom4te.cache >> excludes
 tar -czf json-c-${release}.tar.gz -X excludes json-c-${release}
 
 echo doc >> excludes
-tar -czf json-c-${release}-doc.tar.gz -X excludes json-c-${release}
+tar -czf json-c-${release}-nodoc.tar.gz -X excludes json-c-${release}
 
 Tag the branch:
 cd json-c-${release}