DOC: 51d: updated 51Degrees repo URL for v3.2.10

The v3.2.10 branch has been migrated from the legacy git.51Degrees.com
repo to github.com.  The files on the frozen branch are exactly the same.

(cherry picked from commit 9b9e23928e22c34f758e7cd1549a3913f6f020ea)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
(cherry picked from commit 3650eef4b3bddc80e1cacd8e79f6a3e1e5a12121)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
(cherry picked from commit 5ecf6a6e9e09749b53a553f3690431d8843f4cd6)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
(cherry picked from commit 0c8adc6c3f2b3806ae8b9091fb9880019428a2f6)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
diff --git a/doc/51Degrees-device-detection.txt b/doc/51Degrees-device-detection.txt
index 8c69bb1..d14f243 100644
--- a/doc/51Degrees-device-detection.txt
+++ b/doc/51Degrees-device-detection.txt
@@ -17,7 +17,7 @@
     - either use the proven stable but frozen 3.2.10 version which
       supports the Trie algorithm :
 
-      git clone https://git.51Degrees.com/Device-Detection.git -b v3.2.10
+      git clone https://github.com/51Degrees/Device-Detection.git -b v3.2.10
 
     - or use the new 3.2.12.12 version which continues to receive database
       updates and supports a new Hash Trie algorithm, but which is not