Set min zsh version to 4.3.10

This is for me personally. It should be 4.3.11 but sadly one of the servers I
use, has 4.3.10...

[ticket: X]

init.zsh

@@ -10,7 +10,7 @@
 #
 
 # Check for the minimum supported version.
-min_zsh_version='4.3.11'
+min_zsh_version='4.3.10'
 if ! autoload -Uz is-at-least || ! is-at-least "$min_zsh_version"; then
   print "prezto: old shell detected, minimum required: $min_zsh_version" >&2
   return 1