update SEL

Author: duongau

includes/front-door-edge-locations-by-abbreviation.md

@@ -109,7 +109,7 @@
 | SAO | Sao Paulo, Brazil | South Brazil |
 | SAN | San Antonio, Texas, USA | South Central US, United States |
 | SCL | Santiago, Chile | Chile Central, Latin America |
-| SEL | Seoul, Singapore | Southeast Asia |
+| SEL | Seoul, Korea | Korea Central, Asia |
 | SG  | Singapore, Singapore | Southeast Asia |
 | SGE | Singapore, Singapore | Southeast Asia |
 | SGN | Ho Chi Minh City, Vietnam | Southeast Asia |