Fix code interpreting documentation snippets (#624)

the following issues with the code-interpreting documentation have been
fixed:

1. https://e2b.dev/docs/code-interpreting/analyze-data-with-ai not
working in python
2.
https://e2b.dev/docs/code-interpreting/create-charts-visualizations/static-charts
unnecessary line of code in python

---------

Co-authored-by: Mish Ushakov <10400064+mishushakov@users.noreply.github.com>

Author: ben-fornefeld

apps/web/src/app/(docs)/docs/code-interpreting/analyze-data-with-ai/page.mdx

@@ -462,7 +462,7 @@ with open("../dataset.csv", "rb") as f:
 
 def run_ai_generated_code(ai_generated_code: str):
     print('Running the code in the sandbox....')
-    execution = sbx.notebook.exec_cell(ai_generated_code)
+    execution = sbx.run_code(ai_generated_code)
     print('Code execution finished!')
 
     # First let's check if the code ran successfully.

apps/web/src/app/(docs)/docs/code-interpreting/create-charts-visualizations/static-charts/page.mdx

@@ -39,8 +39,6 @@ if (firstResult.png) {
 import base64
 from e2b_code_interpreter import Sandbox
 
-sbx = Sandbox()
-
 code_to_run = """
 import matplotlib.pyplot as plt