Merge pull request rails#46059 from jbampton/fix-word-case [ci-skip]

Fix word case

Author: p8

activesupport/lib/active_support/testing/isolation.rb

@@ -63,7 +63,7 @@ def run_in_isolation(&blk)
       module Subprocess
         ORIG_ARGV = ARGV.dup unless defined?(ORIG_ARGV)
 
-        # Complicated H4X to get this working in windows / jruby with
+        # Complicated H4X to get this working in Windows / JRuby with
         # no forking.
         def run_in_isolation(&blk)
           require "tempfile"