[Docs] Revamp documentation (#1010)

docs/components/data-sources/xml.mdx

@@ -0,0 +1,17 @@
+---
+title: '🧾 XML file'
+---
+
+### XML file
+
+To add any xml file, use the data_type as `xml`. Eg:
+
+```python
+from embedchain import Pipeline as App
+
+app = App()
+
+app.add('content/data.xml')
+```
+
+Note: Only the text content of the xml file will be added to the app. The tags will be ignored.