fix feature freeze dates

Author: xabbuh

contributing/community/releases.rst

@@ -94,13 +94,13 @@ Version  Feature Freeze  Release  End of Maintenance        End of Life
 2.2      01/2013         03/2013  11/2013 (8 months)        05/2014
 **2.3**  03/2013         05/2013  05/2016 (36 months)       05/2017
 2.4      09/2013         11/2013  09/2014 (10 months [1]_)  01/2015
-2.5      02/2014         05/2014  01/2015 (8 months)        07/2015
+2.5      03/2014         05/2014  01/2015 (8 months)        07/2015
 2.6      09/2014         11/2014  07/2015 (8 months)        01/2016
-**2.7**  02/2015         05/2015  05/2018 (36 months [2]_)  05/2019
+**2.7**  03/2015         05/2015  05/2018 (36 months [2]_)  05/2019
 3.0      09/2015         11/2015  07/2016 (8 months)        01/2017
-3.1      02/2016         05/2016  01/2017 (8 months)        07/2017
+3.1      03/2016         05/2016  01/2017 (8 months)        07/2017
 3.2      09/2016         11/2016  07/2017 (8 months)        01/2018
-**3.3**  02/2017         05/2017  05/2020 (36 months)       05/2021
+**3.3**  03/2017         05/2017  05/2020 (36 months)       05/2021
 ...      ...             ...      ...                       ...
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