Fix typo: Window -> Windows in .gitattributes comment (#14961)

.gitattributes

@@ -1,5 +1,5 @@
 # Ensure that .sh scripts use LF as line separator, even if they are checked out
-# to Windows(NTFS) file-system, by a user of Docker for Window. 
+# to Windows(NTFS) file-system, by a user of Docker for Windows. 
 # These .sh scripts will be run from the Container after `docker compose up -d`.
 # If they appear to be CRLF style, Dash from the Container will fail to execute
 # them.