upgraded README.md (deepset-ai#9613)

* upgraded README.md

Added table of contents and made minor grammatical fixes with enhancing the readability of the file

* update README.md

Removal of capitalization

* Update README.md

Author: kr1shnasomani

README.md

@@ -14,6 +14,21 @@ LLMs, Transformer models, vector search and more. Whether you want to perform re
 document search, question answering or answer generation, Haystack can orchestrate state-of-the-art embedding models
 and LLMs into pipelines to build end-to-end NLP applications and solve your use case.
 
+## Table of Contents
+
+- [Installation](#installation)
+- [Documentation](#documentation)
+- [Features](#features)
+- [Use Cases](#features)
+- [deepset AI Platform (Managed Solution)](#-tip)
+- [Hayhooks (REST API Deployment)](#-tip-1)
+- [🆕 deepset Studio](#-deepset-studio-your-development-environment-for-haystack)
+- [Telemetry](#telemetry)
+- [🖖 Community](#-community)
+- [Contributing to Haystack](#contributing-to-haystack)
+- [Who Uses Haystack](#who-uses-haystack)
+
+
 ## Installation
 
 The simplest way to get Haystack is via pip:
@@ -68,7 +83,7 @@ Some examples of what you can do with Haystack:
 
 ## 🆕 deepset Studio: Your Development Environment for Haystack
 
-Use **deepset Studio** to visually create, deploy, and test your Haystack pipelines. Learn more about it in [our announcement post](https://haystack.deepset.ai/blog/announcing-studio).
+Use **deepset Studio** to visually create, deploy, and test your Haystack pipelines. Learn more about it in our [announcement post](https://haystack.deepset.ai/blog/announcing-studio).
 
 ![studio](https://github.com/user-attachments/assets/e4f09746-20b5-433e-8261-eca224ac23b3)