Replace rst with md.

Author: preritdas

docs/source/index.md

@@ -0,0 +1,14 @@
+# Allocator Docs
+
+These are the docs.
+
+```{toctree}
+:caption: 'Contents:'
+:maxdepth: 2
+```
+
+
+
+```{include} ../../README.md
+:relative-images:
+```