Update sql-server-linux-setup-machine-learning-docker.md

updating syntax

Author: cawrites

docs/linux/sql-server-linux-setup-machine-learning-docker.md

@@ -45,11 +45,15 @@ The following command clones the `mssql-docker` git repository to a local direct
 Complete the following steps to build the docker image:
 
 1. Change the directory to the mssql-mlservices directory:
+    
+    ```bash
+    /opt/mssql/mlservices
+    ```
 
 2. In the same directory, run the following command:
 
     ```bash
-    docker builds -t mssql-server-mlservices
+    docker build -t mssql-server-mlservices
     ```
 
 3. Run the command: