Update 03-cli.md

doc/03-cli.md

@@ -397,7 +397,7 @@ This implies `--by-package --by-suggestion`, showing both lists.
 * **--by-suggestion:** Groups output by suggested package.
 * **--no-dev:** Excludes suggestions from `require-dev` packages.
 
-## depends
+## depends (why)
 
 The `depends` command tells you which other packages depend on a certain
 package. As with installation `require-dev` relationships are only considered
@@ -432,7 +432,7 @@ psr/log 1.0.0 Common interface for logging libraries
 * **--recursive (-r):** Recursively resolves up to the root package.
 * **--tree (-t):** Prints the results as a nested tree, implies -r.
 
-## prohibits
+## prohibits (why-not)
 
 The `prohibits` command tells you which packages are blocking a given package
 from being installed. Specify a version constraint to verify whether upgrades