Remove maybe problematic links

doc/reference/std/cli/multicall.md

@@ -64,7 +64,7 @@ return a getopt-spec (suitable to be passed to `(apply getopt ...)`) of
 Register the function as entry-point,
 with given `name` (argument passed to `make-symbol`),
 or if not specified, a symbol made of only the
-[easy-shell-characters](shell.md#easy-shell-characters) of `id`.
+[`easy-shell-characters?`](shell.md) of `id`.
 The entry-point will have the given `help` and `getopt` fields.
 
 ### define-entry-point

doc/reference/std/cli/print-exit.md

@@ -38,9 +38,9 @@ in which case don't print anything
 
 Any values but `(void)` and `(values)` will thus cause the values to be printed,
 one by one, using `(value-printer)`, similar to how the Scheme REPL works.
-However, the Scheme REPL would use [`writeln`](../misc/ports.md#writeln) as its
+However, the Scheme REPL would use `writeln` as its
 value printer, but the default `(value-printer)` above is
-[`prn`](../misc/repr.md#prn) which we found to be more useful in this situation.
+`prn` which we found to be more useful in this situation.
 
 
 ### print-exit
@@ -87,7 +87,7 @@ Call a function, print the resulting values (if applicable),
 and exit with an according exit code, as per `print-exit`.
 If an error occurs during execution,
 exit with an error code as per
-[`with-exit-on-error`](../error.md#with-exit-on-error).
+`with-exit-on-error`.
 
 ### begin-print-exit
 ```scheme

doc/reference/std/getopt.md

@@ -12,5 +12,4 @@ for the sake of backward compatibility.
 (import :std/cli/getopt)
 :::
 
-See [cli/getopt.md](cli/getopt.md) for the module documentation.
-
+See [:std/cli/getopt](cli/getopt.md) for the module documentation.