message: [language][move] Update grammar comment to match PR
  PR changed the acquires list to consist of ModuleAccesses
  instead of BaseTypes. Update the grammar in the comment to reflect
  that change.
  Closes:
  Approved by: tzakian
diff: @@ -1020,13 +1020,13 @@ fn parse_type_parameter<'input>(tokens: &mut Lexer<'input>) -> Result<(Name, Kin
  // "native" "public"?
  // <FunctionDefName> "(" Comma<Parameter> ")"
  // (":" <Type>)?
  -// ("acquires" <BaseType> ("," <BaseType>)*)?
  +// ("acquires" <ModuleAccess> ("," <ModuleAccess>)*)?
  // ";"
  // MoveFunctionDecl =
  // "public"?
  // <FunctionDefName> "(" Comma<Parameter> ")"
  // (":" <Type>)?
  -// ("acquires" <BaseType> ("," <BaseType>)*)?
  +// ("acquires" <ModuleAccess> ("," <ModuleAccess>)*)?
  // "{" <Sequence>
  // FunctionDefName =
  // <Name>
  @@ -1090,7 +1090,7 @@ fn parse_function_decl<'input>(
  sp(name.loc(), Type_::Unit)
  };
  - // ("acquires" (<BaseType> ",")* <BaseType> ","?
  + // ("acquires" (<ModuleAccess> ",")* <ModuleAccess> ","?
  let mut acquires = vec![];
  if match_token(tokens, Tok::Acquires)? {
  loop {
  