package/capnproto: replace utf-8 apostrophe by ascii single quote

Signed-off-by: Peter Seiderer <ps.report@gmx.net>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/capnproto/Config.in

@@ -10,7 +10,7 @@ config BR2_PACKAGE_CAPNPROTO
 	  Cap'n Proto is an insanely fast data interchange format
 	  and capability-based RPC system. Think JSON, except
 	  binary. Or think Protocol Buffers, except faster. In
-	  fact, in benchmarks, Cap’n Proto is INFINITY TIMES
+	  fact, in benchmarks, Cap'n Proto is INFINITY TIMES
 	  faster than Protocol Buffers.
 
 	  https://capnproto.org/index.html