Fix README description for af

README.md

@@ -385,7 +385,7 @@ Vim has a lot of nooks and crannies. VSCodeVim preserves some of the coolest noo
 * `gd` - jump to definition. _Astoundingly_ useful in any language that VSCode provides definition support for. I use this one probably hundreds of times a day.
 * `gq` on a visual selection - Reflow and wordwrap blocks of text, preserving commenting style. Great for formatting documentation comments.
 * `gc`, which adds another cursor on the next word it finds which is the same as the word under the cursor.
-* `af`, a command that I added in visual mode, which selects increasingly large blocks of text. e.g. if you had "blah (foo [bar 'ba|z'])" then it would select 'baz' first. If you pressed az again, it'd then select [bar 'baz'], and if you did it a third time it would select "(foo [bar 'baz'])".
+* `af`, a command that I added in visual mode, which selects increasingly large blocks of text. e.g. if you had "blah (foo [bar 'ba|z'])" then it would select 'baz' first. If you pressed `af` again, it'd then select [bar 'baz'], and if you did it a third time it would select "(foo [bar 'baz'])".
 * `gh`, another custom VSCodeVim command. This one is equivalent to hovering your mouse over wherever the cursor is. Handy for seeing types and error messages without reaching for the mouse!
 
 (The mnemonic: selecting blocks is fast af! :wink:)