DOC: update README.md

ev-br · web-flow · commit 58ff06a837b7 · 2024-05-15T20:29:06.000+03:00
diff --git a/README.md b/README.md
@@ -1,6 +1,6 @@
 # Floating-point aware, human readable, numpy-compatible doctesting.
 
-# TL;DR
+## TL;DR
 
 This project extends the standard library `doctest` module to allow flexibility
 and easy customization of finding, parsing and checking code examples in
