Update library/collections.abc.po

Co-authored-by: Panagiotis Skias <[email protected]>

Author: mgiannopoulos24

library/collections.abc.po

@@ -593,7 +593,7 @@ msgstr ""
 
 #: library/collections.abc.rst:286
 msgid "ABCs for read-only and mutable :ref:`sets <types-set>`."
-msgstr "ABCs για ανάγνωση μόνο και μεταβλητά :ref:`sets <types-set>`."
+msgstr "ABCs για ανάγνωση μόνο και mutable :ref:`sets <types-set>`."
 
 #: library/collections.abc.rst:291
 msgid "ABCs for read-only and mutable :term:`mappings <mapping>`."