minor #10207 [Process] Fix typo in Process object initialization (gregurco)

This PR was merged into the 3.4 branch.

Discussion
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[Process] Fix typo in Process object initialization

Hello!
This small typo does not exist in 2.8, so I did PR into 3.4.

Commits
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d96989f [Process] Fix typo in Process object initialization

Author: xabbuh

components/process.rst

@@ -231,7 +231,7 @@ Before a process is started, you can specify its standard input using either the
 of the constructor. The provided input can be a string, a stream resource or a
 Traversable object::
 
-    $process = new Process('cat']);
+    $process = new Process('cat');
     $process->setInput('foobar');
     $process->run();