package/websocketpp: replace BSD-3c by BSD-3-Clause

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/websocketpp/websocketpp.mk

@@ -6,7 +6,7 @@
 
 WEBSOCKETPP_VERSION = 0.8.2
 WEBSOCKETPP_SITE = $(call github,zaphoyd,websocketpp,$(WEBSOCKETPP_VERSION))
-WEBSOCKETPP_LICENSE = BSD-3c, MIT, Zlib
+WEBSOCKETPP_LICENSE = BSD-3-Clause, MIT, Zlib
 WEBSOCKETPP_LICENSE_FILES = COPYING
 WEBSOCKETPP_CPE_ID_VENDOR = zaphoyd
 WEBSOCKETPP_INSTALL_STAGING = YES