style: add indentation to method description

Author: toshimaru

src/_sass/railsdoc.scss

@@ -170,12 +170,17 @@ code {
   }
 }
 
-// FIXME: Wrap method with `code` tag in sdoc
 .method {
-  h3 {
-    font-family: monospace;
-    font-size: 1.3rem;
-  }
+    h3 {
+        font-family: monospace;
+        font-size: 1.3rem;
+    }
+
+    .description,
+    .method__aka,
+    .method__source {
+        margin-left: 1em;
+    }
 }
 
 #content {