fix cli description for env param

README.md

@@ -139,7 +139,7 @@ Spot supports the following command-line options:
 - `-k`, `--key=`: Specifies the SSH key to use when connecting to remote hosts. Overrides the key defined in the playbook file.
 - `-s`, `--skip=`: Skips the specified commands during the task execution. Providing the `-s` flag multiple times with different command names skips multiple commands.
 - `-o`, `--only=`: Runs only the specified commands during the task execution. Providing the `-o` flag multiple times with different command names runs only multiple commands.
-- `-e`, `--env=`: Sets the environment variables to be used during the task execution. Providing the `-e` flag multiple times with different environment variables sets multiple environment variables, e.g., `-e VAR1=VALUE1 -e VAR2=VALUE2`.
+- `-e`, `--env=`: Sets the environment variables to be used during the task execution. Providing the `-e` flag multiple times with different environment variables sets multiple environment variables, e.g., `-e VAR1:VALUE1 -e VAR2:VALUE2`.
 - `--dry`: Enables dry-run mode, which prints out the commands to be executed without actually executing them.
 - `-v`, `--verbose`: Enables verbose mode, providing more detailed output and error messages during the task execution.
 - `--dbg`: Enables debug mode, providing even more detailed output and error messages during the task execution as well as diagnostic messages.