Include/internal/pycore_import.h: Fix typo (python#119586)

Fix typo

Author: Eclips4

Include/internal/pycore_import.h

@@ -50,7 +50,7 @@ struct _import_runtime_state {
         PyMutex mutex;
         /* The actual cache of (filename, name, PyModuleDef) for modules.
            Only legacy (single-phase init) extension modules are added
-           and only if they support multiple initialization (m_size >- 0)
+           and only if they support multiple initialization (m_size >= 0)
            or are imported in the main interpreter.
            This is initialized lazily in fix_up_extension() in import.c.
            Modules are added there and looked up in _imp.find_extension(). */