feat: Improve readability of nested lists (#12593)

Previously, any nested lists would be rendered as follows:

```
1. Main item
   1. Sub-item
      1. Sub-sub-item
      2. Another sub-sub-item
   2. Another sub-item
2. Another main item
```

Reading the above nested list is difficult, since the reader needs to keep track of the indentation in order to tell whether an item is a main item, sub-item, or sub-sub-item.

This PR changes the numbering format for sub-items and sub-sub-items to make the item types clearer. The example above would now render as:

```
1. Main item
   a. Sub-item
      i. Sub-sub-item
      ii. Another sub-sub-item
   b. Another sub-item
2. Another main item
```

Author: szokeasaurusrex

src/components/docPage/type.scss

@@ -166,6 +166,14 @@
     margin-top: 0;
   }
 
+  ol ol {
+    list-style-type: lower-alpha;
+  }
+
+  ol ol ol {
+    list-style-type: lower-roman;
+  }
+
   table {
     border-collapse: collapse;
     width: 100%;