Re-level non-docs content to top of repo and rename content→docs

docs/tutorials/python/modular-tutorials-in-python/index.md

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+---
+html: modular-tutorials-in-python.html
+parent: python.html
+top_nav_grouping: Article Types
+metadata:
+  indexPage: true
+seo:
+    description: Modular XRPL tutorials in Python.
+---
+# Modular Tutorials in Python
+
+These tutorials take an incremental approach to implementing functionality, so you can reuse parts from the earlier tutorials on your way to making more advanced software.
+
+
+{% child-pages /%}

docs/tutorials/python/modular-tutorials-in-python/nfts-using-python/index.md

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+---
+html: nfts-using-python.html
+parent: modular-tutorials-in-python.html
+top_nav_grouping: Article Types
+metadata:
+  indexPage: true
+seo:
+    description: Mint and sell NFTs on the XRP Ledger using Python.
+---
+# NFTs Using Python
+
+Mint and sell NFTs on the XRP Ledger using Python.
+
+
+{% child-pages /%}