minor #8876 Update multiple_kernels.rst (Kwadz)

This PR was merged into the 4.0 branch.

Discussion
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Update multiple_kernels.rst

Correct "aplication" to "application"

Commits
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0c4b688 Update multiple_kernels.rst

Author: xabbuh

configuration/multiple_kernels.rst

@@ -6,7 +6,7 @@ How To Create Symfony Applications with Multiple Kernels
 
 .. caution::
 
-    Creating aplications with multiple kernels is no longer recommended by
+    Creating applications with multiple kernels is no longer recommended by
     Symfony. Consider creating multiple small applications instead.
 
 In most Symfony applications, incoming requests are processed by the