Add key phrases tags to GPL detection rule

This was otherwise detected in a BSD-like license
because this rule warranty disclaimer is not the 
standard one seen in a typical GPL notice

Reference: #2820
Signed-off-by: Philippe Ombredanne <pombredanne@nexb.com>

Author: pombredanne

src/licensedcode/data/rules/gpl-2.0-plus_365.RULE

@@ -1,7 +1,7 @@
 This program is free software; you can redistribute  it and/or modify it
-under  the terms of  the GNU General  Public License as published by the
-Free Software Foundation;  either version 2 of the  License, or (at your
-option) any later version.
+under  the terms of  the {{GNU General  Public License}} as published by the
+Free Software Foundation;  either {{version 2}} of the  License, or (at your
+option) {{any later version{{.
 
 THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
 WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
@@ -14,4 +14,4 @@ ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-	
+