Fix incorrect code block syntax in markdown files

Corrected code block syntax in multiple markdown files to ensure proper rendering. Changes include fixing redundant or incorrect language specifiers and removing unnecessary characters in code block declarations.

development/documentation-generator.md

@@ -56,7 +56,8 @@ Additional context:
 
 ## Example Input
 
-```markdownpython
+```markdown
+```python
 import requests
 import json
 from typing import Dict, List, Optional
@@ -89,9 +90,10 @@ class WeatherAPI:
         return response.json()["forecast"]
 ```
 
+```
 ## Example Output
 
-```markdownmarkdown
+```markdown
 # WeatherAPI Documentation
 
 ## Overview