Fix trimming of whitespace in debug/font-issues.zsh

debug/font-issues.zsh

@@ -12,7 +12,7 @@ trim() {
     set -f
     # shellcheck disable=2048,2086
     set -- $*
-    printf '%s\n' "${*//[[:space:]]/ }"
+    printf '%s\n' "${*//[[:space:]]/}"
     set +f
 }