Fix comment error in example formula

Closes Homebrew/homebrew#26017.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

Library/Contributions/example-formula.rb

@@ -325,7 +325,7 @@ class ExampleFormula < Formula
     # Sometime you will see that instead of `+` we build up a path with `/`
     # because it looks nicer (but you can't nest more than two `/`):
     (var/'foo').mkpath
-    # Copy `./example_code/simple/ones` to share/demos/examples
+    # Copy `./example_code/simple/ones` to share/demos
     (share/'demos').install "example_code/simple/ones"
     # Copy `./example_code/simple/ones` to share/demos/examples
     (share/'demos').install "example_code/simple/ones" => 'examples'