Update about.md

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Signed-off-by: Matty Widdop <18513864+MattyTheHacker@users.noreply.github.com>

Author: MattyTheHacker

about.md

@@ -49,7 +49,7 @@ can get involved with straight away — no membership required! 😃
 
 ### Become A Member
 
-To take part in our ticketed events, you'll want to to
+To take part in our ticketed events, you'll want to
 [purchase a membership](/join); it's only £5 for the entire year!
 
 Being a member also has several other perks, described on the [membership page](/membership).