Fix language name of HEEx (#61)

Author: AlternateRT

extension.toml

@@ -11,19 +11,19 @@ repository = "https://github.com/zed-extensions/elixir"
 
 [language_servers.expert]
 name = "Expert"
-languages = ["Elixir", "HEEX"]
+languages = ["Elixir", "HEEx"]
 
 [language_servers.elixir-ls]
 name = "ElixirLS"
-languages = ["Elixir", "HEEX"]
+languages = ["Elixir", "HEEx"]
 
 [language_servers.next-ls]
 name = "Next LS"
-languages = ["Elixir", "HEEX"]
+languages = ["Elixir", "HEEx"]
 
 [language_servers.lexical]
 name = "Lexical"
-languages = ["Elixir", "HEEX"]
+languages = ["Elixir", "HEEx"]
 
 [grammars.elixir]
 repository = "https://github.com/elixir-lang/tree-sitter-elixir"

languages/heex/config.toml

@@ -1,4 +1,4 @@
-name = "HEEX"
+name = "HEEx"
 grammar = "heex"
 path_suffixes = ["heex", "html.eex", "leex", "neex"]
 block_comment = { start = "<%!-- ", prefix = "", end = " --%>", tab_size = 0 }