Rewrite for custom code warning messages (#26291)

Quick britpicking for some warning messages!

src/transformers/dynamic_module_utils.py

@@ -594,9 +594,10 @@ def resolve_trust_remote_code(trust_remote_code, model_name, has_local_code, has
                 signal.alarm(TIME_OUT_REMOTE_CODE)
                 while trust_remote_code is None:
                     answer = input(
-                        f"Loading {model_name} requires to execute some code in that repo, you can inspect the content of "
-                        f"the repository at https://hf.co/{model_name}. You can dismiss this prompt by passing "
-                        "`trust_remote_code=True`.\nDo you accept? [y/N] "
+                        f"The repository for {model_name} contains custom code which must be executed to correctly "
+                        f"load the model. You can inspect the repository content at https://hf.co/{model_name}. "
+                        f"You can avoid this prompt in future by passing the argument `trust_remote_code=True`.\n"
+                        f"Do you wish to run the custom code? [y/N] "
                     )
                     if answer.lower() in ["yes", "y", "1"]:
                         trust_remote_code = True
@@ -606,9 +607,9 @@ def resolve_trust_remote_code(trust_remote_code, model_name, has_local_code, has
             except Exception:
                 # OS which does not support signal.SIGALRM
                 raise ValueError(
-                    "Loading this model requires you to execute execute some code in that repo on your local machine. "
-                    f"Make sure you have read the code at https://hf.co/{model_name} to avoid malicious use, then set "
-                    "the option `trust_remote_code=True` to remove this error."
+                    f"The repository for {model_name} contains custom code which must be executed to correctly "
+                    f"load the model. You can inspect the repository content at https://hf.co/{model_name}. "
+                    f"Please pass the argument `trust_remote_code=True` to allow custom code to be run."
                 )
         elif has_remote_code:
             # For the CI which puts the timeout at 0