Fix typo (provid -> provide)

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Pull Request resolved: #3476

Reviewed By: zhanghang1989

Differential Revision: D31052262

Pulled By: ppwwyyxx

fbshipit-source-id: d1f7ab357ce48e4d7735e024d6441a96b863bd71

Author: jordan-bonecutter

detectron2/config/lazy.py

@@ -151,7 +151,7 @@ def new_import(name, globals=None, locals=None, fromlist=(), level=0):
 
 class LazyConfig:
     """
-    Provid methods to save, load, and overrides an omegaconf config object
+    Provide methods to save, load, and overrides an omegaconf config object
     which may contain definition of lazily-constructed objects.
     """