Update about-book.md

src/about-book.md

@@ -43,24 +43,17 @@ Rust 语言真的好：连续八年成为全世界最受欢迎的语言、没有
 <table>
     <tr>
         <td align="center">
-            <a href="https://github.com/sunface">
-                <img src="https://avatars.githubusercontent.com/u/7036754?v=4?s=100" width="160px"   alt=""/>
+            <a href="https://github.com/EluvK">
+                <img src="https://avatars.githubusercontent.com/u/36977935?v=4" width="160px" alt=""/>
                 <br />
-                <sub><b>Sunface 🥇</b></sub>
+                <sub><b>EluvK</b></sub>
             </a>
         </td>
         <td align="center">
             <a href="https://github.com/AllanDowney">
                 <img src="https://avatars.githubusercontent.com/u/82752697?v=4?s=100"  width="160px" alt=""/>
                 <br />
-                <sub><b>AllanDowney 🥈</b></sub>
-            </a>
-        </td>
-        <td align="center">
-            <a href="https://github.com/EluvK">
-                <img src="https://avatars.githubusercontent.com/u/36977935?v=4" width="160px" alt=""/>
-                <br />
-                <sub><b>EluvK 🥉</b></sub>
+                <sub><b>AllanDowney</b></sub>
             </a>
         </td>
     </tr>