chore: readme and pypi cleanup (#481)

* chore: fix PyPI documentation link, remove readme table of contents

* store phoenix logo externally and change link

README.md

@@ -1,6 +1,6 @@
 <p align="center">
     <a target="_blank" href="https://arize.com" style="background:none">
-        <img alt="phoenix logo" src="https://github.com/Arize-ai/phoenix/blob/main/assets/phoenix-logo-light.svg" width="auto" height="200"></img>
+        <img alt="phoenix logo" src="https://storage.googleapis.com/arize-assets/phoenix/assets/phoenix-logo-light.svg" width="auto" height="200"></img>
     </a>
     <br/>
     <br/>
@@ -25,13 +25,6 @@ Phoenix provides MLOps insights at lightning speed with zero-config observabilit
 
 **_Phoenix is under active development. APIs may change at any time._**
 
--   [Installation](#installation)
--   [Getting Started](#getting-started)
--   [Documentation](#documentation)
--   [Community](#community)
--   [Contributing](#contributing)
--   [License](#license)
-
 ## Installation
 
 ```shell