Update cli arguments doc

docs/cli-arguments.md

@@ -1,25 +1,33 @@
 # CLI arguments
 
 It's possible to pass arguments to a program executed with `hvml run`:
+
 ```sh
 hvml run <Path to program> [Arguments in expression form]...
 ```
+
 It accepts any expression that would also be valid inside an hvm-lang function.
 
 Arguments are passed to programs by applying them to the entrypoint function:
+
 ```js
 main x1 x2 x3 = (MainBody x1 x2 x3)
 
-// Calling with `hvml run <file> arg1 arg2 arg3`, it becomes:
+// Calling with `hvml run <file> arg1 arg2 arg3 argN`, it becomes:
 
-main = (λx1 λx2 λx3 (MainBody x1 x2 x3) arg1 arg2 arg3)
+main = (λx1 λx2 λx3 (MainBody x1 x2 x3) arg1 arg2 arg3 argN)
 ```
 
-The entrypoint function must receive exactly the number of arguments specified in the left-hand side of its definition.
-```
-// Must pass exactly 3 arguments when running
-main x y z = (MainBody x y z)
+There are no restrictions on the number of arguments passed to the program.
+
+```rust
+// Can receive 2 CLI arguments
+main x y = (+ x y)
 
 // Can't receive CLI arguments
-main = λx λy λz (MainBody x y z)
-```
+main = λx λy (+ x y)
+
+// Calling with just one argument
+hvml run <path> 5
+λa (+ a 5)
+```