minor #18262 Remove space end of line (alamirault)

This PR was merged into the 5.4 branch.

Discussion
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Remove space end of line

There is 6 occurences on 6.3.

Found with regex `[a-zA-Z] $`

If PR is accepted `@OskarStark` WDYT to add a Doctor rule ? Which name do you suggest ?

Commits
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bf0d3a1 Remove space end of line

Author: javiereguiluz

components/psr7.rst

@@ -29,7 +29,7 @@ Usage
 Converting from HttpFoundation Objects to PSR-7
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-The bridge provides an interface of a factory called 
+The bridge provides an interface of a factory called
 `HttpMessageFactoryInterface`_ that builds objects implementing PSR-7
 interfaces from HttpFoundation objects.
 

workflow.rst

@@ -39,7 +39,7 @@ a ``Definition`` and a way to write the states to the objects (i.e. an
 instance of a :class:`Symfony\\Component\\Workflow\\MarkingStore\\MarkingStoreInterface`.)
 
 Consider the following example for a blog post. A post can have these places:
-``draft``, ``reviewed``, ``rejected``, ``published``. You could define the workflow as 
+``draft``, ``reviewed``, ``rejected``, ``published``. You could define the workflow as
 follows:
 
 .. configuration-block::