Update README.md

Author: Andrey Helldar

README.md

@@ -2,7 +2,7 @@
 
 Easy data transfer from one database to another
 
-<img src="https://preview.dragon-code.pro/TheDragonCode/migrate-db.svg?brand=laravel" width="100%" height="320" alt="Migrate DB"/>
+<img src="https://preview.dragon-code.pro/TheDragonCode/migrate-db.svg?brand=laravel" alt="Migrate DB"/>
 
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