Update README.md, fix typo, add sentence about repo and issues etc

README.md

-# docs pipline
+# docs pipeline
 
-We combine documentation from various starting points and process them through CI, GitLab Pages, and automation to reach the appropriate end point. 
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+We combine documentation from various starting points and process them through CI, GitLab Pages, and automation to reach the appropriate end point.
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+This repo holds relevant issue tickets, wiki, and working materials around the documentation development.
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