docs(exercises): updated all exercises readme files

all exercises readme files now have a unified structure and a description
2021-04-23 19:54:31 +02:00
1 parent 54804e344d
commit 249ad44cc0
@@ -1,7 +1,7 @@
-### If
+# If

 `if`, the most basic type of control flow, is what you'll learn here.

-#### Book Sections
+## Further information

 - [Control Flow - if expressions](https://doc.rust-lang.org/book/ch03-05-control-flow.html#if-expressions)