Docs: correct command to list passes (#2059)

* Correct command to list passes

* pass-help instead of list-passes

docs/compiler.md

@@ -7,11 +7,10 @@ various passes and backends.
 
 The compiler is organized as a sequence of passes that are run when the compiler
 executes.
-To get a complete list of all passes, run the following from the repository
-root:
+To get a complete list of all passes, run the following:
 
 ```
-cargo run -- --list-passes
+cargo run -- pass-help
 ```
 
 This generates results of the form:
@@ -83,4 +82,4 @@ match up with SystemVerilog definitions of those primitives. These libraries may
 also expose components written in Calyx, usually defined using primitives
 exposed by the file.
 
-No Calyx program can work without the primitives defined in the [Core Library](libraries/core.md).
+No Calyx program can work without the primitives defined in the [Core Library](libraries/core.md).