Update Instructions to first contribution.txt

Author: tmksemag

Instructions to first contribution.txt

@@ -4,4 +4,5 @@ step 3: in the terminal for linux users and bash for windows users use the comma
 step 4: git add .
 step 5:git status
 step 6:git commit -m "comment"
-step 7:git push -u origin master.
+step 7:git push -u origin master.
+step 8: create a pull request on ur repository