minor symfony#18784 [Serializer] Fix the subject agreement mistake - grammar (teklakct)

This PR was merged into the 5.4 branch.

Discussion
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[Serializer] Fix the subject agreement mistake - grammar

For more details about agreement errors in English please check https://www.swarthmore.edu/writing/agreement-errors-0

Commits
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d754889 [Serializer] Fix the subject agreement mistake - grammar

Author: OskarStark

components/serializer.rst

@@ -459,7 +459,7 @@ It is also possible to serialize only a set of specific attributes::
 Only attributes that are not ignored (see below) are available.
 If some serialization groups are set, only attributes allowed by those groups can be used.
 
-As for groups, attributes can be selected during both the serialization and deserialization process.
+As for groups, attributes can be selected during both the serialization and deserialization processes.
 
 .. _serializer_ignoring-attributes: