Optimized slack description on link unfurling (#610)

* latest material for mkdocs

* Crispified site description

Author: sriumcp

mkdocs/mkdocs.yml

@@ -2,7 +2,7 @@ site_name: Iter8
 site_url: https://iter8.tools/latest
 site_author: Srinivasan Parthasarathy
 site_description: >-
-  A/B, A/B/n, Canary and Conformance testing for Kubernetes apps/ML models. Automate metrics-driven experiments, progressive delivery, validation, and promotion/rollback of apps/ML models. Maximize release velocity while protecting end-user experience. Quick start in 5 mins.
+  Automate metrics-driven experiments, progressive delivery, validation, and promotion/rollback of apps/ML models. Maximize release velocity while protecting end-user experience. Quick start in 5 mins.
 
 # Repository
 repo_name: iter8-tools/iter8