fix(examples): correct WebBaseLoader typo in LangChain QA examples

[Rahul-Lashkari]

Description of the change

Corrects a recurring typo in the class name WebBaseLoader (incorrectly written as WebBasedLoader) within the documentation text of two LangChain QA example notebooks:

• examples/gemini/python/langchain/Gemini_LangChain_QA_Chroma_WebLoad.ipynb
• examples/gemini/python/langchain/Gemini_LangChain_QA_Pinecone_WebLoad.ipynb

Motivation

To ensure the correct class name is referenced in the documentation, improving accuracy and preventing potential confusion for users copying code or commands.

Type of change

Documentation

Checklist

• [x] I have performed a self-review of my code.
• [x] I have added detailed comments to my code where applicable.
• [x] I have verified that my change does not break existing code.
• [x] My PR is based on the latest changes of the main branch (if unsure, please run git pull --rebase upstream main).
• [x] I am familiar with the Google Style Guide for the language I have coded in.
• [x] I have read through the Contributing Guide and signed the Contributor License Agreement.