Update Readme.md

Author: sreelakshmig009

Techgig Code Gladiators 2021/Readme.md

@@ -4,7 +4,7 @@
 
 * Content:
 
-   * Open Coding Round Problems:
+   * Open Coding Round :
 
         * <a href ="https://github.com/sreelakshmig009/CompetitiveProgrammingQuestionBank/blob/techgig/Techgig%20Code%20Gladiators%202021/open%20round/virus_outbreak.md">Virus Outbreak</a>