docs: use pepy.tech downloads badge and fix Fleet Dashboard video embed

Author: mitulgarg

README.md

@@ -16,9 +16,10 @@
   <a href="https://pypi.org/project/env-doctor/">
     <img src="https://img.shields.io/pypi/v/env-doctor?style=flat-square&color=blue&label=PyPI" alt="PyPI">
   </a>
-  <a href="https://pypi.org/project/env-doctor/">
-    <img src="https://img.shields.io/pypi/dm/env-doctor?style=flat-square&color=success&label=Downloads" alt="Downloads">
+  <a href="https://pepy.tech/projects/env-doctor">
+    <img src="https://static.pepy.tech/personalized-badge/env-doctor?period=total&units=INTERNATIONAL_SYSTEM&left_color=BLACK&right_color=GREEN&left_text=downloads" alt="PyPI Downloads">
   </a>
+
   <img src="https://img.shields.io/badge/python-3.10%2B-blue?style=flat-square" alt="Python">
   <a href="https://github.com/mitulgarg/env-doctor/blob/main/LICENSE">
     <img src="https://img.shields.io/github/license/mitulgarg/env-doctor?style=flat-square&color=green" alt="License">