Updating Demystifying Istio's Sidecar Injection Model Page (#4562)
Updating Demystifying Istio's Sidecar Injection Model Page (#4562)

* Update index.md

Fixes some documentation concerns of #4509

* Update content/blog/2019/data-plane-setup/index.md

Spell Check.

Co-Authored-By: Frank Budinsky <eff2b2321921dd21161b5817c477702c05bb637b@ca.ibm.com>

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