Shorten up title in docs

Change "kolla's Philosophy on Deployment" to "Kolla's Deplooyment
Philosophy" so it takes up less bytes.

Change-Id: I35d7b91f6b5260878e3a5a45d89b97c74d88cddc

doc/deployment-philosophy.rst

-Kolla's Philosophy on Deployment
-================================
+Kolla's Deployment Philosophy
+=============================
 
 Overview
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