fixing readme which was broken by rogue pull-request in the past

I have rejected pullrequest which was suggesting incorrect change to
readme but it was merged to master anyway. So taking this opportunity to
fix it

README.md

@@ -1,4 +1,4 @@
-<p align="center"><a href="https://github.com/proximax-storage" target="_blank"><img width="300" srchttps://user-images.githubusercontent.com/29048783/72933958-c8836400-3d30-11ea-99d5-678e20f43e19.png" alt="ProximaX Sirius Blockchain Java SDK"></a></p>
+<p align="center"><a href="https://github.com/proximax-storage" target="_blank"><img width="300" src="https://user-images.githubusercontent.com/29048783/72933958-c8836400-3d30-11ea-99d5-678e20f43e19.png" alt="ProximaX Sirius Blockchain Java SDK"></a></p>
 
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