feat(build): allow for docs to be built properly

src/main.zig

@@ -1,6 +1,7 @@
 const std = @import("std");
 const ksyms = @import("ksyms");
 const pl = @import("base").pl;
+pub const rtl = @import("rtl");
 
 const DebugWriter = struct {
     pub const Error = error{};

src/platform/um/entry.zig

@@ -2,6 +2,8 @@ const b = @import("base");
 
 pub const std_options = b.std_options;
 
+pub const rtl = @import("rtl");
+
 const std = @import("std");
 const ke = b.ke;
 const pl = b.pl;