Fix dblp page to csfw (#1330)

The CSFW page has been transferred to https://dblp.org/db/conf/csfw/index.html

Author: liuup

conference/SC/csfw.yml

@@ -5,7 +5,7 @@
     ccf: B
     core: A
     thcpl: B
-  dblp: cgisfw
+  dblp: csfw
   confs:
     - year: 2022
       id: csfw22