Fix stray keystroke in readme file.

keyboards/gherkin/keymaps/steno/readme.md

@@ -3,7 +3,7 @@
 This is a stenography-only keymap. It boots by default into GeminiPR mode. All the excess stuff is stripped away (I'd remove normal keyboard support if I could).
 
 > Note: The number bar has been moved to the bottom row in all the left-over spaces.
-x
+
     | S | T | P | H | * | F | P | L | T | D |
     | S | K | W | R | * | R | B | G | S | Z |
-    | # | # | A | O | # | E | U | # | # | # |
+    | # | # | A | O | # | E | U | # | # | # |