chore(ffi): change hyper.h to only include first line of docs

This will let us write much more documentation per item without worrying
about increasing the size of the hyper.h header file.

capi/cbindgen.toml

@@ -1,12 +1,15 @@
-# See https://github.com/eqrion/cbindgen/blob/master/docs.md#cbindgentoml for
+# See https://github.com/mozilla/cbindgen/blob/master/docs.md#cbindgentoml for
 # a list of possible configuration values.
 language = "C"
 header = """/*
- * Copyright 2021 Sean McArthur. MIT License.
+ * Copyright 2023 Sean McArthur. MIT License.
  * Generated by gen_header.sh. Do not edit directly.
+ *
+ * Full docs at: https://docs.rs/hyper/latest/hyper/ffi/index.html
  */"""
 include_guard = "_HYPER_H"
 no_includes = true
 sys_includes = ["stdint.h", "stddef.h", "stdbool.h"]
 cpp_compat = true
 documentation_style = "c"
+documentation_length = "short"