Update WafLogController to use 'region_code' query parameter instead of...

Update WafLogController to use 'region_code' query parameter instead of 'region' for improved clarity in WAF log proxy handling.

internal/controller/waflogcontroller.go

@@ -21,7 +21,7 @@ func NewWafLogController(regionUrlMap map[string]string) *WafLogController {
 }
 
 func (c *WafLogController) WafLogProxy(ctx *gin.Context) {
-	region := ctx.Query("region")
+	region := ctx.Query("region_code")
 	remoteUrl, err := url.Parse(c.regionUrlMap[region])
 	if err != nil {
 		ctx.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})