game entry file names changed to canonical version

games/fish_fillets-next_generation.md

@@ -0,0 +1,20 @@
+# Fish Fillets - Next Generation
+
+_Port of the wonderful puzzle game Fish Fillets from ALTAR interactive._
+
+- Home: http://fillets.sourceforge.net/, https://sourceforge.net/projects/fillets/
+- Media: https://en.wikipedia.org/wiki/Fish_Fillets_NG
+- State: mature
+- Download: http://fillets.sourceforge.net/download.php
+- Platform: Windows, Linux, macOS
+- Keywords: puzzle, port
+- Code repository: https://git.code.sf.net/p/fillets/code-fillets-ng, https://git.code.sf.net/p/fillets/code-fillets_data (+), https://git.code.sf.net/p/fillets/code-fillets_web (+), http://fillets.cvs.sourceforge.net (cvs)
+- Code language: C++
+- Code license: GPL-2.0
+- Code dependencies: SDL
+
+Android port?
+
+## Building
+
+- Build system: Autoconf