Update docs/generics.rst

Co-authored-by: Maksim Spirkov <63721828+mspirkov@users.noreply.github.com>

Author: jaapio

docs/generics.rst

@@ -2,7 +2,7 @@
 Generics
 ========
 
-This project is capable of parsing generics notation as used by phpstan. But it has some limitations, in regards to
+This project is capable of parsing generics notation as used by PHPStan. But it has some limitations, in regards to
 phpstan. The main difference is that phpstan does scan your whole codebase to find out what types are used in generics,
 while this library only parses the types as they are given to it.