game entry file names changed to canonical version

games/pkg-config.md

@@ -0,0 +1,14 @@
+# pkg-config
+
+_Tool used when compiling applications and libraries._
+
+- Home: https://www.freedesktop.org/wiki/Software/pkg-config/
+- Media: https://en.wikipedia.org/wiki/Pkg-config
+- State: mature
+- Download: https://pkg-config.freedesktop.org/releases/
+- Keywords: tool, library
+- Code repository: https://anongit.freedesktop.org/git/pkg-config.git (https://cgit.freedesktop.org/pkg-config)
+- Code language: C
+- Code license: GPL-2.0
+
+## Building