[MRG+1] fix the path of html files in contributing.md
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index b76286159b792..ece0ef947ef2e 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -217,7 +217,7 @@ You can edit the documentation using any text editor and then generate
 the HTML output by typing ``make html`` from the doc/ directory.
 Alternatively, ``make`` can be used to quickly generate the
 documentation without the example gallery. The resulting HTML files will
-be placed in ``_build/html/`` and are viewable in a web browser. See the
+be placed in ``_build/html/stable`` and are viewable in a web browser. See the
 ``README`` file in the ``doc/`` directory for more information.
 
 For building the documentation, you will need

#### What does this implement/fix? Explain your changes.
When building the documentation, the resulting html files are located in _build/html/stable as indicated in the contributing section of the user guide. This PR fixes the path in CONTRIBUTING.md


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