ISBlangchainChat.ipynb needs formatting

[amaze18]

ISBlangchainChat.ipynb needs proper formatting for readability

https://colab.research.google.com/drive/1HRY2WUt7IZ4i2JxNJz4j_pzU1f61T0s0?usp=sharing#scrollTo=wQF4mZbz7ka7

@GB2k4

[amaze18]

give some headings to rough part as well @GB2k4 , so that its clear what u r trying to do

[GB2k4]

Has put the main parts of the code with the sub sections on the top, And added rough work for ongoing work thats not properly done yet with proper sections for that.