fix docstring typo

IPython/utils/frame.py

@@ -90,7 +90,7 b" def debugx(expr,pre_msg=''):"
 #def debugx(expr,pre_msg=''): pass
 
 def extract_module_locals(depth=0):
-    """Returns (module, locals) of the funciton `depth` frames away from the caller"""
+    """Returns (module, locals) of the function `depth` frames away from the caller"""
     f = sys._getframe(depth + 1)
     global_ns = f.f_globals
     module = sys.modules[global_ns['__name__']]