Update download badges in README.md (#1133)

Update broken downloads badge

<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> **Low Risk**
> Documentation-only change that updates external badge image URLs and
styling; no runtime or build behavior is affected.
> 
> **Overview**
> Fixes broken download badges in `README.md` and
`packages/python-sdk/README.md`.
> 
> The PyPI badge is switched from shields.io to a Pepy monthly downloads
badge, and the NPM badge label/styling is updated to explicitly show
*monthly* downloads.
> 
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
811324d. This will update automatically
on new commits. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

Author: mlejva

README.md

@@ -7,12 +7,11 @@
 
 <h4 align="center">
   <a href="https://pypi.org/project/e2b/">
-    <img alt="Last 1 month downloads for the Python SDK" loading="lazy" width="200" height="20" decoding="async" data-nimg="1"
-    style="color:transparent;width:auto;height:100%" src="https://img.shields.io/pypi/dm/e2b?label=PyPI%20Downloads">
+    <img alt="Last 1 month downloads for the Python SDK" loading="lazy" decoding="async" style="color:transparent;width:170px;height:18px" src="https://static.pepy.tech/personalized-badge/e2b?period=monthly&units=INTERNATIONAL_SYSTEM&left_color=BLACK&right_color=GREEN&left_text=PyPi%20Monthly%20Downloads">
   </a>
   <a href="https://www.npmjs.com/package/e2b">
-    <img alt="Last 1 month downloads for the JavaScript SDK" loading="lazy" width="200" height="20" decoding="async" data-nimg="1"
-    style="color:transparent;width:auto;height:100%" src="https://img.shields.io/npm/dm/e2b?label=NPM%20Downloads">
+    <img alt="Last 1 month downloads for the JavaScript SDK" loading="lazy" width="200" height="30" decoding="async" data-nimg="1"
+    style="color:transparent;width:auto;height:100%" src="https://img.shields.io/npm/dm/e2b?label=NPM%20Monthly%20Downloads">
   </a>
 </h4>
 

packages/python-sdk/README.md

@@ -4,8 +4,7 @@
 
 <h4 align="center">
   <a href="https://pypi.org/project/e2b/">
-    <img alt="Last 1 month downloads for the Python SDK" loading="lazy" width="200" height="20" decoding="async" data-nimg="1"
-    style="color:transparent;width:auto;height:100%" src="https://img.shields.io/pypi/dm/e2b?label=PyPI%20Downloads">
+    <img alt="Last 1 month downloads for the Python SDK" loading="lazy" decoding="async" style="color:transparent;width:170px;height:18px" src="https://static.pepy.tech/personalized-badge/e2b?period=monthly&units=INTERNATIONAL_SYSTEM&left_color=BLACK&right_color=GREEN&left_text=PyPi%20Monthly%20Downloads">
   </a>  
 </h4>