State of D: link to the blog article

Author: wilzbach

index.dd

@@ -362,7 +362,7 @@ $(DIVID news,
 
 $(DIVC boxes,
 
-<a href="https://dlang.typeform.com/to/H1GTak">
+<a href="https://dlang.org/blog/2018/02/28/the-state-of-d-2018-survey">
 <img src="$(ROOT_DIR)images/state-of-d-2018.png" style="max-width:100%; padding-top: 1.5em" />
 </a>