Added Selection sort for C language

Author: JMJ2312

README.md

@@ -3320,7 +3320,7 @@ In order to achieve greater coverage and encourage more people to contribute to
   <td><a href="https://en.wikipedia.org/wiki/Selection_sort">Selection Sort</a></td>
   <td> <!-- C -->
   <a href="./CONTRIBUTING.md">
-  <img align="center" height="25" src="./logos/github.svg" />
+  <img align="center" height="25" src="./logos/c.svg" />
   </a>
   </td>
   <td> <!-- C++ -->