DOC Rephrase README section to include institutional support (scikit-learn#34469)

Co-authored-by: Gael Varoquaux <gael.varoquaux@normalesup.org>

Author: AnneBeyer

README.rst

@@ -54,7 +54,8 @@ of Code project, and since then many volunteers have contributed. See
 the `About us <https://scikit-learn.org/dev/about.html#authors>`__ page
 for a list of core contributors.
 
-It is currently maintained by a team of volunteers.
+It is currently maintained by a community of contributors, with volunteers but also `support from several
+organisations <https://scikit-learn.org/dev/institutional_support.html>`__.
 
 Website: https://scikit-learn.org
 
@@ -162,8 +163,6 @@ of Code project, and since then many volunteers have contributed. See
 the `About us <https://scikit-learn.org/dev/about.html#authors>`__ page
 for a list of core contributors.
 
-The project is currently maintained by a team of volunteers.
-
 **Note**: `scikit-learn` was previously referred to as `scikits.learn`.
 
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