fix typo

src/main.rs

@@ -89,7 +89,7 @@ impl MPS {
         println!("1. Create empty repository for storing your passwords on gitlab or somewhere you prefer");
         println!("2. Create dir `mps`: `mkdir ~/mps`");
         println!("3. Clone to your home folder `~/.mps/storage`: `git clone <your_storage_url> storage`");
-        println!("4. xport varable `$MPS_HOME`: `export MPS_HOME=\"/home/<your_username>/.mps\"`");
+        println!("4. Export varable `$MPS_HOME`: `export MPS_HOME=\"/home/<your_username>/.mps\"`");
         println!("5. Run `mps init`");
     }