Document -- to use negative inputs.

Also explicitly write `leo run main 1u32 2u32`
rather than just mysteriously showing its output.

Author: mikebenfield

documentation/cli/00_overview.md

@@ -156,6 +156,11 @@ leo run {$TRANSITION} {$INPUTS}
 ```
 This command does not synthesize the program circuit or generate proving and verifying keys.
 
+For the default program created by `leo new`, this command
+```bash
+leo run main 1u32 2u32
+```
+will generate this output
 
 ```bash title="console output:"
  Leo ✅ Compiled 'main.leo' into Aleo instructions
@@ -169,6 +174,13 @@ This command does not synthesize the program circuit or generate proving and ver
  Leo ✅ Finished 'hello.aleo/main' (in "/hello/build")
 ```
 
+If one or more of your inputs are negatives, and consequently begin with a `-`,
+you may separate the inputs with a `--` so that the command line parser
+won't attempt to parse them as options:
+```bash
+leo run ${TRANSITION} -- {$INPUTS}
+```
+
 ## `leo execute`
 [Back to Top](#commands)
 :::tip
@@ -320,4 +332,4 @@ Checking latest released version... v1.8.3
 
 :::warning
 `leo example` has been deprecated and will no longer be supported.
-:::
+:::