minor #3809 Fixed typo (WouterJ)

This PR was merged into the 2.3 branch.

Discussion
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Fixed typo

This must be the most minor PR ever submitted :)

Commits
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65ea73a Fixed typo

Author: weaverryan

book/doctrine.rst

@@ -1409,7 +1409,7 @@ For more information about Doctrine, see the *Doctrine* section of the
 .. _`Query Builder`: http://docs.doctrine-project.org/projects/doctrine-orm/en/latest/reference/query-builder.html
 .. _`Doctrine Query Language`: http://docs.doctrine-project.org/projects/doctrine-orm/en/latest/reference/dql-doctrine-query-language.html
 .. _`Association Mapping Documentation`: http://docs.doctrine-project.org/projects/doctrine-orm/en/latest/reference/association-mapping.html
-.. _`Mapping Types Documentation`: http://docs.doctrine-project.org/projects/doctrine-orm/en/latest/reference/basic-mapping.html#property-mappings
+.. _`Mapping Types Documentation`: http://docs.doctrine-project.org/projects/doctrine-orm/en/latest/reference/basic-mapping.html#property-mapping
 .. _`Property Mapping`: http://docs.doctrine-project.org/projects/doctrine-orm/en/latest/reference/basic-mapping.html#property-mapping
 .. _`Lifecycle Events documentation`: http://docs.doctrine-project.org/projects/doctrine-orm/en/latest/reference/events.html#lifecycle-events
 .. _`Reserved SQL keywords documentation`: http://docs.doctrine-project.org/projects/doctrine-orm/en/latest/reference/basic-mapping.html#quoting-reserved-words