Update remaining links to blog

Author: Felicity Chapman

docs/language/ql-training/java/apache-struts-java.rst

@@ -62,7 +62,7 @@ RCE in Apache Struts
 
 - Disclosed as `CVE-2017-9805 <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-9805>`__
 
-- Blog post: https://lgtm.com/blog/apache_struts_CVE-2017-9805
+- Blog post: https://blog.semmle.com/apache-struts-vulnerability-cve-2017-9805/
 
 Finding the RCE yourself
 ========================

docs/language/ql-training/java/global-data-flow-java.rst

@@ -57,7 +57,7 @@ Code injection in Apache struts
 
 .. note::
 
-   More details on the CVE can be found here: https://lgtm.com/blog/apache_struts_CVE-2018-11776 and 
+   More details on the CVE can be found here: https://blog.semmle.com/apache-struts-CVE-2018-11776/ and 
    https://github.com/Semmle/demos/tree/master/ql_demos/java/Apache_Struts_CVE-2018-11776
 
    More details on OGNL can be found here: https://commons.apache.org/proper/commons-ognl/