update nanmean_cn.rst test=document_fix (#5106)

mrcangye · web-flow · commit bc1e3c9d985f · 2022-08-03T17:01:17.000+08:00
diff --git a/docs/api/paddle/nanmean_cn.rst b/docs/api/paddle/nanmean_cn.rst
@@ -1,6 +1,6 @@
 .. _cn_api_tensor_cn_nanmean:
 
-paddle.nanmean
+nanmean
 -------------------------------
 
 .. py:function:: paddle.nanmean(x, axis=None, keepdim=False, name=None)
