Fix ext-url for CVE-2016-5195 dirtycow 2 (#77)

Author: bcoles

linux-exploit-suggester.sh

@@ -715,7 +715,7 @@ Reqs: pkg=linux-kernel,ver>=2.6.22,ver<=4.8.3
 Tags: debian=7|8,RHEL=5|6|7,ubuntu=14.04|12.04,ubuntu=10.04{kernel:2.6.32-21-generic},ubuntu=16.04{kernel:4.4.0-21-generic}
 Rank: 4
 analysis-url: https://github.com/dirtycow/dirtycow.github.io/wiki/VulnerabilityDetails
-ext-url: https://www.exploit-db.com/download/40847.cpp
+ext-url: https://www.exploit-db.com/download/40847
 Comments: For RHEL/CentOS see exact vulnerable versions here: https://access.redhat.com/sites/default/files/rh-cve-2016-5195_5.sh
 exploit-db: 40839
 author: FireFart (author of exploit at EDB 40839); Gabriele Bonacini (author of exploit at 'ext-url')