fix grammar in generated comment

Author: EricFromCanada

lib/alias.rb

@@ -60,11 +60,10 @@ def write(opts = {})
         else
           <<~EOS
             #
-            # This is a Homebrew alias script. It'll be called when the
-            # user type `brew #{name}`. Any remaining argument is
-            # passed to this script. You can retrieve those with $*, or
-            # the first one only with $1. Please keep your script on
-            # one line.
+            # This is a Homebrew alias script. It'll be called when the user
+            # types `brew #{name}`. Any remaining arguments are passed to
+            # this script. You can retrieve those with $*, or only the first
+            # one with $1. Please keep your script on one line.
 
             # TODO Replace the line below with your script
             echo "Hello I'm brew alias "#{name}" and my args are:" $1