chore: formatting

books/core/53.html

@@ -1,6 +1,7 @@
-<h1>22GAME RULES</h1>
-<p><strong>CHAPTER ADVANCING A CLOCK</strong></p>
+<h2>CHAPTER ADVANCING A CLOCK</h2>
+
 <p>In general, Clocks advance through Checks:</p>
+
 <ul>
   <li>Fill one section for a successful Check.</li>
   <li>
@@ -35,10 +36,12 @@
   Level 10. The Game Master fills two sections on the "Ambushed!" Clock — one
   for her failure, and another because she failed the Check by three or more.
 </p>
+
+<h3>CLOCKS AND THE STORY</h3>
+
 <p>
   Clocks should always interact with what happens in the story. The Game Master
   should use situational modifiers and adjust the Difficulty Level to represent
   advantages or disadvantages derived from the Players' choices and the events
   that are taking place in the scene.
 </p>
-<h2>CLOCKS AND THE STORY</h2>