EEP 63: fix format

eeps/eep-0063.md

@@ -19,18 +19,14 @@ UTF-8 encoded binary strings is more cumbersome: `<<"This is my string"/utf8>>`.
 
 Here, we propose a lightweight, alternative syntax for UTF-8 binary string literals:
 
-```
-Str = b"This is my string".
-```
+    Str = b"This is my string".
 
 and patterns:
 
-```
-case Str of
-  b"This is my string" -> ok;
-  _ -> error
-end.
-```
+    case Str of
+      b"This is my string" -> ok;
+      _ -> error
+    end.
 
 Implementation outline
 ==============
@@ -59,4 +55,3 @@ Copyright
 
 This document is placed in the public domain or under the CC0-1.0-Universal
 license, whichever is more permissive.
-