Update Cowgol Files

Cowgol files updated per @Laci1953.  See <https://groups.google.com/g/rc2014-z80/c/RwMdqNOPWXw>.

Co-Authored-By: ladislau szilagyi <87603175+Laci1953@users.noreply.github.com>

Source/Images/d_cowgol/Readme.txt

@@ -66,4 +66,9 @@ release by Ladislau Szilagyi as of 2/25/2025.
 Updated COWFIX.COM by Ladislau Szilagyi.  See
 https://groups.google.com/g/rc2014-z80/c/RwMdqNOPWXw
 
--- WBW 9:42 AM 9/12/2025
+-- WBW 9:42 AM 9/12/2025
+
+Updated multiple files from distribution.  See
+https://groups.google.com/g/rc2014-z80/c/RwMdqNOPWXw
+
+-- WBW 9:58 AM 10/20/2025