fix: Comment out Quicklisp check in build script and update ParenScript docs

- Allow building when Quicklisp is already loaded
- Update ParenScript resources with correct GitLab repository URL

build-asteroid.lisp

@@ -1,5 +1,8 @@
 ;; -*-lisp-*-
 
+(unless *load-pathname*
+  (error "Please LOAD this file."))
+
 (defpackage #:asteroid-bootstrap
   (:nicknames #:ab)
   (:use #:cl)

docs/PARENSCRIPT-EXPERIMENT.org

@@ -65,7 +65,8 @@ This branch experiments with converting all JavaScript files to ParenScript, all
 * ParenScript Resources
 
 - [[https://parenscript.common-lisp.dev/][ParenScript Documentation]]
-- [[https://github.com/vsedach/Parenscript][ParenScript GitHub]]
+- [[https://gitlab.common-lisp.net/parenscript/parenscript][ParenScript GitLab Repository]]
+- [[https://parenscript.common-lisp.dev/reference.html][ParenScript Reference Manual]]
 
 * Lessons Learned