environments: clang has fortran support now

Author: lazka

web/docs/environments.md

@@ -50,7 +50,6 @@ respective repositories.
 **GCC** based environments:
 
 * Widely tested/used at this point
-* Fortran support
 * While there also exists a Clang package in the MINGW environments, that one
   still uses the GNU linker and the GNU C++ library. In some cases Clang is used
   to build packages as well there, in case upstream prefers Clang over GCC for