Properly document 🙋

The emoji cheat sheet used to say that you could type in "raised_hand"
to get a woman raising her hand. However, actually doing so on GitHub
and other sites just gives you a ✋.

To get the desired emoji, you actually need to type "raising_hand"

You can see that here:
hand: ✋
raised_hand: ✋
raising_hand: 🙋

This updates the images and HTML appropriately to reflect that change.

public/index.html

@@ -145,6 +145,7 @@ <h2>People</h2>
       <li><div><img src="graphics/emojis/v.png"> :<span class="name">v</span>:</div></li>
       <li><div><img src="graphics/emojis/wave.png"> :<span class="name">wave</span>:</div></li>
       <li><div><img src="graphics/emojis/hand.png"> :<span class="name">hand</span>:</div></li>
+      <li><div><img src="graphics/emojis/raised_hand.png"> :<span class="name">raised_hand</span>:</div></li>
       <li><div><img src="graphics/emojis/open_hands.png"> :<span class="name">open_hands</span>:</div></li>
       <li><div><img src="graphics/emojis/point_up.png"> :<span class="name">point_up</span>:</div></li>
       <li><div><img src="graphics/emojis/point_down.png"> :<span class="name">point_down</span>:</div></li>
@@ -169,7 +170,7 @@ <h2>People</h2>
       <li><div><img src="graphics/emojis/ok_woman.png"> :<span class="name">ok_woman</span>:</div></li>
       <li><div><img src="graphics/emojis/no_good.png"> :<span class="name">no_good</span>:</div></li>
       <li><div><img src="graphics/emojis/information_desk_person.png"> :<span class="name">information_desk_person</span>:</div></li>
-      <li><div><img src="graphics/emojis/raised_hand.png"> :<span class="name">raised_hand</span>:</div></li>
+      <li><div><img src="graphics/emojis/raising_hand.png"> :<span class="name">raising_hand</span>:</div></li>
       <li><div><img src="graphics/emojis/bride_with_veil.png"> :<span class="name">bride_with_veil</span>:</div></li>
       <li><div><img src="graphics/emojis/person_with_pouting_face.png"> :<span class="name">person_with_pouting_face</span>:</div></li>
       <li><div><img src="graphics/emojis/person_frowning.png"> :<span class="name">person_frowning</span>:</div></li>