PEP 810 - Update some language

As I was reading #150052, I remembered a comment we got in the initial
pass about using the language "deferred" instead of "lazy" in this
error. So, fix it up.

I looked around for other similar language and found just one more

Author: tjstum

Objects/lazyimportobject.c

@@ -135,7 +135,7 @@ PyDoc_STRVAR(lazy_import_doc,
 "lazy_import(builtins, name, fromlist=None, /)\n"
 "--\n"
 "\n"
-"Represents a deferred import that will be resolved on first use.\n"
+"Represents a lazy import that will be resolved on first use.\n"
 "\n"
 "Instances of this object accessed from the global scope will be\n"
 "automatically imported based upon their name and then replaced with\n"

Python/import.c

@@ -4049,7 +4049,7 @@ _PyImport_LoadLazyImportTstate(PyThreadState *tstate, PyObject *lazy_import)
 
         // Create a cause exception showing where the lazy import was declared.
         PyObject *msg = PyUnicode_FromFormat(
-            "deferred import of '%U' raised an exception during resolution",
+            "lazy import of '%U' raised an exception during resolution",
             import_name
         );
         Py_DECREF(import_name); // Done with import_name.