Update README.md

Update README.md

Refine README formatting

Update README formatting and phrasing for clarity

Update link for Output Parsers tutorial

Update tutorial status for Output Parsers to complete

tut3 - ipynb and readme

Fix link in LCEL Deep Dive section

Fix formatting of Parsers section in README

Merge branch 'main' of https://github.com/hitpant/langchain-tutorials

master readme update

Fix formatting in README.md flowchart

Fix formatting in README.md for flowchart

added header image and updated readme

Delete header.svg