removing failing docs link (#239)

Co-authored-by: Frank Laub <flaub@risc0.com>

README.md

@@ -93,7 +93,7 @@ the 'examples' directory, most of which will eventually be moved out-of-tree.
 | ----------------------- | ----------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------- |
 | risc0-build             | [![x](https://img.shields.io/crates/v/risc0-build)](https://crates.io/crates/risc0-build)                         | [![](https://img.shields.io/docsrs/risc0-build)](https://docs.rs/risc0-build)                         |
 | risc0-core-sys          | [![x](https://img.shields.io/crates/v/risc0-core-sys)](https://crates.io/crates/risc0-core-sys)                   | [![](https://img.shields.io/docsrs/risc0-core-sys)](https://docs.rs/risc0-core-sys)                   |
-| risc0-r0vm              | [![x](https://img.shields.io/crates/v/risc0-r0vm)](https://crates.io/crates/risc0-r0vm)                           | [![](https://img.shields.io/docsrs/risc0-r0vm)](https://docs.rs/risc0-r0vm)                           |
+| risc0-r0vm              | [![x](https://img.shields.io/crates/v/risc0-r0vm)](https://crates.io/crates/risc0-r0vm)                           | -----N/A----
 | risc0-zkp               | [![x](https://img.shields.io/crates/v/risc0-zkp)](https://crates.io/crates/risc0-zkp)                             | [![](https://img.shields.io/docsrs/risc0-zkp)](https://docs.rs/risc0-zkp)                             |
 | risc0-zkp-sys           | [![x](https://img.shields.io/crates/v/risc0-zkp-sys)](https://crates.io/crates/risc0-zkp-sys)                     | [![](https://img.shields.io/docsrs/risc0-zkp-sys)](https://docs.rs/risc0-zkp-sys)                     |
 | risc0-zkvm              | [![x](https://img.shields.io/crates/v/risc0-zkvm)](https://crates.io/crates/risc0-zkvm)                           | [![](https://img.shields.io/docsrs/risc0-zkvm)](https://docs.rs/risc0-zkvm)                           |