Merge pull request #1997 from jphilis/main

chore: update error message to error message given by rustc (error[E0596]) in hint

Author: mo8it

info.toml

@@ -318,7 +318,7 @@ name = "move_semantics1"
 path = "exercises/06_move_semantics/move_semantics1.rs"
 mode = "test"
 hint = """
-So you've got the "cannot borrow immutable local variable `vec` as mutable"
+So you've got the "cannot borrow `vec` as mutable, as it is not declared as mutable"
 error on the line where we push an element to the vector, right?
 
 The fix for this is going to be adding one keyword, and the addition is NOT on