(minor) clean up typos.

invokeai/backend/model_management/libc_util.py

@@ -59,7 +59,7 @@ class LibcUtil:
     Note that this class will raise on __init__() if 'libc.so.6' can't be found. Take care to handle environments where
     this shared library is not available.
 
-    TODO: Improve cross-OS copatibility of this class.
+    TODO: Improve cross-OS compatibility of this class.
     """
 
     def __init__(self):

tests/backend/model_management/test_libc_util.py

@@ -20,4 +20,5 @@ def test_struct_mallinfo2_to_str():
     """Smoke test of Struct_mallinfo2.__str__()."""
     info = Struct_mallinfo2()
     info_str = str(info)
-    print(info_str)
+
+    assert len(info_str) > 0