docs: fix visible embedmd markers
Escape the parentheses so the marker stays invisible in the browser.
@@ -508,7 +508,7 @@ for the various Nodes are ignored; instead, the second argument to
entrypoint for each Node.
<!-- prettier-ignore-start -->
-[embedmd]:# (../examples/abitest/tests/src/tests.rs Rust /^#\[test\]/ /oak_tests::start().*/)
+[embedmd]:# (../examples/abitest/tests/src/tests.rs Rust /^#\[test\]/ /oak_tests::start\(.*/)
```Rust
#[test]
#[serial(node_test)]
@@ -532,7 +532,7 @@ Instead, we need a little bit of boilerplate in the source code for each of the
Nodes to allow testability:
<!-- prettier-ignore-start -->
-[embedmd]:# (../examples/abitest/module_0/rust/src/lib.rs Rust /^#.*wasm32.*/ /pub fn main().*/)
+[embedmd]:# (../examples/abitest/module_0/rust/src/lib.rs Rust /^#.*wasm32.*/ /pub fn main\(.*/)
```Rust
#[cfg(target_arch = "wasm32")]
#[no_mangle]
