Opt out -Zrustdoc-scrape-examples on docs.rs

I'd like a chance to audit all the code that rustdoc is inserting into
the docs. Currently I am skeptical that showing unsafe-libyaml's
internal usages of APIs is a net benefit to the public documentation. I
am also skeptical that quite so many examples are needed, and that they
should be featured so prominently in comparison to handwritten docs.
Lastly I wish there were a way to turn this behavior off on a more
granular basis.

Cargo.toml

@@ -16,5 +16,8 @@ rust-version = "1.56"
 pretty_assertions = "1.0"
 unsafe-libyaml-test-suite = { path = "tests/data" }
 
+[lib]
+doc-scrape-examples = false
+
 [package.metadata.docs.rs]
 targets = ["x86_64-unknown-linux-gnu"]