docs: ✏️ Fix installation command

Author: mpyw

README.md

@@ -23,12 +23,12 @@ GLOBAL OPTIONS:
 ## Installation
 
 ```
-go install github.com/mpyw/sqlc-restruct/[email protected]
+go install github.com/mpyw/sqlc-restruct/cmd/sqlc-restruct@v0.0.0-alpha.0
 ```
 
 ## SubCommands
 
-### [separate-interface](./cmd/separate_interface.go)
+### [separate-interface](./cmd/sqlc-restruct/separate_interface.go)
 
 ```ShellSession
 user@host:~$ sqlc-restruct separate-interface --help