erlang: Use Edoc style auto-pairs

Specifically this changes backtic's right-hand-side pair character
to single-quote which is the syntax for inline and block code in
Edoc.

languages.toml

@@ -1118,6 +1118,14 @@ comment-token = "%%"
 indent = { tab-width = 4, unit = "    " }
 language-server = { command = "erlang_ls" }
 
+[language.auto-pairs]
+'(' = ')'
+'{' = '}'
+'[' = ']'
+'"' = '"'
+"'" = "'"
+'`' = "'"
+
 [[grammar]]
 name = "erlang"
 source = { git = "https://github.com/the-mikedavis/tree-sitter-erlang", rev = "0e7d677d11a7379686c53c616825714ccb728059" }