Use same language as elixir-lang/elixir for environment

Author: KronicDeth

ISSUE_TEMPLATE.md

@@ -1,10 +1,9 @@
 ### Subject of the issue
 Describe your issue here.
 
-### Your environment
-* version of Erlang/OTP
-* version of Elixir
-* which operating system
+### Environment
+* Elixir & Erlang/OTP versions (`elixir -version`):
+* Operating System:
 
 ### Steps to reproduce
 Tell us how to reproduce this issue.
@@ -13,4 +12,4 @@ Tell us how to reproduce this issue.
 Tell us what should happen
 
 ### Actual behaviour
-Tell us what happens instead
+Tell us what happens instead