Update README.md

Signed-off-by: Maikel-B <Maikel.Baars@gmail.com>

Author: Maikel-B

README.md

@@ -1,7 +1,7 @@
 # HelloID-Conn-Prov-Source-SQL
 <br />
 <p align="center"> 
-  <img src="https://www.tools4ever.nl/connector-logos/microsoftsql-logo.png">
+  <img src="https://www.tools4ever.nl/connector-logos/sql-logo.png">
 </p>
 # HelloID Docs
 The official HelloID documentation can be found at: https://docs.helloid.com/