some changes

docs/index.md

@@ -14,10 +14,3 @@
 $$\Huge
 \lim_{N \rightarrow \infty}\sum_{i=1}^N \frac{1}{i} = \infty
 $$
-
-## Project layout
-
-    mkdocs.yml    # The configuration file.
-    docs/
-        index.md  # The documentation homepage.
-        ...       # Other markdown pages, images and other files.