Update README.md

README.md

@@ -50,7 +50,7 @@ Additional customization to make it more friendly towards major distros (which `
 
 ## Change associations
 
-If you want to set custom applications for certain mime types, or change the ones set already (e.g. vim, fmedia, zathura), modify the `assocs` structure in **config.def.h** (it's easy). Then run the following commands to re-compile and install:
+If you want to set custom applications for certain mime types, or change the ones set already (e.g. vim, fmedia, zathura), modify the `assocs` structure in *config.def.h* (it's easy). Then run the following commands to re-compile and install:
 
     $ make clean
     $ make