Don't add analytics to .entries.

hack/lib/util.sh

@@ -255,7 +255,9 @@ kube::util::gen-analytics() {
   fi
   # We don't touch files in special dirs, and the kubectl docs are
   # autogenerated by gendocs.
+  # Don't descend into .directories
   mdfiles=($( find "${dir}" -name "*.md" -type f \
+              -not -path '*/\.*' \
               -not -path "${path}/vendor/*" \
               -not -path "${path}/third_party/*" \
               -not -path "${path}/_gopath/*" \