added comments

chatbot.py

@@ -16,7 +16,7 @@ class ChatBot():
             'https://noqs.in/internships/'
         ]
 
-        url_loader = UnstructuredURLLoader(urls=urls)
+        url_loader = UnstructuredURLLoader(urls=urls) #' can also use Web Base Loader
         url_data = url_loader.load()
 
         text_loader = TextLoader('data.txt', encoding = 'UTF-8')
@@ -29,7 +29,7 @@ class ChatBot():
         self.docs = url_docs + text_docs
 
     def start_embeddings(self):
-        embeddings = HuggingFaceEmbeddings() 
+        embeddings = HuggingFaceEmbeddings() # uses sentence based embddings for ingestion and retrieval
         load_dotenv()
         # Initialize Pinecone client
         pc = Pinecone(