README.md: Fix broken image on GitBook

Updated the link in README.md, which fixes the broken image on GitBook Closes coala#398
neelanshsahai · Nov 11, 2017 · f07d45d · f07d45d
1 parent dcc7938
commit f07d45d
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/README.md b/README.md
@@ -1,4 +1,4 @@
-<p align="center"><img src="screenshots/header.png"></p>
+![image](./screenshots/header.png)
 
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