typo

Closes Homebrew/homebrew#21385.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>

Library/Homebrew/extend/pathname.rb

@@ -365,7 +365,7 @@ class Pathname
   def write_exec_script *targets
     targets.flatten!
     if targets.empty?
-      opoo "tried to write exec sripts to #{self} for an empty list of targets"
+      opoo "tried to write exec scripts to #{self} for an empty list of targets"
     end
     targets.each do |target|
       target = Pathname.new(target) # allow pathnames or strings