all: Clean up error strings to use lowercase and change cannot to can't.

Now that error string compression is supported it's more important to have
consistent error string formatting (eg all lowercase English words,
consistent contractions).  This commit cleans up some of the strings to
make them more consistent.

1 files changed, 1 insertions, 1 deletions

diff --git a/py/builtinimport.c b/py/builtinimport.c
index 5c82c68d9..28a8f41f7 100644
--- a/py/builtinimport.c
+++ b/py/builtinimport.c
@@ -313,7 +313,7 @@ mp_obj_t mp_builtin___import__(size_t n_args, const mp_obj_t *args) {
 
         // We must have some component left over to import from
         if (p == this_name) {
-            mp_raise_ValueError(MP_ERROR_TEXT("cannot perform relative import"));
+            mp_raise_ValueError(MP_ERROR_TEXT("can't perform relative import"));
         }
 
         uint new_mod_l = (mod_len == 0 ? (size_t)(p - this_name) : (size_t)(p - this_name) + 1 + mod_len);