Fix: use go run instead of search in go bin directory

Makefile

@@ -1,6 +1,6 @@
 .PHONY: all swagger clean
 
-SWAG ?= ~/go/bin/swag
+SWAG ?= go run github.com/swaggo/swag/cmd/[email protected]
 SWAG_INIT_ARGS += -o docs -g cmds/server.go
 
 GO_ENV += CGO_ENABLED=0