#1754 Require snake_case names for linters in the codebase

ale_linters/haskell/stack_ghc.vim

@@ -2,7 +2,8 @@
 " Description: ghc for Haskell files, using Stack
 
 call ale#linter#Define('haskell', {
-\   'name': 'stack-ghc',
+\   'name': 'stack_ghc',
+\   'aliases': ['stack-ghc'],
 \   'output_stream': 'stderr',
 \   'executable': 'stack',
 \   'command': 'stack ghc -- -fno-code -v0 %t',