You are really wrong. The Common Lisp Hyperspecs weights very little in my machine. 2.2 MB compressed as a TGZ.
It's really docummented. But the standard compared to Scheme it's huge.
PD: 2.2MB as HTML text weights nothing. You don't need images. It's 16MB uncompressed. More than 1500 items. People often forgets how little plain text weights.
If your spec is small but you have hundreds of megabytes of bloat, it means you're not even remotely documenting everything.