Ignore missing_panics_doc pedantic clippy lint

    warning: docs for function which may panic missing `# Panics` section
       --> src/wrapper.rs:949:1
        |
    949 | pub fn invalidate_current_thread_spans() {
        | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        |
    note: first possible panic found here
       --> src/wrapper.rs:951:9
        |
    951 | /         panic!(
    952 | |             "proc_macro2::invalidate_current_thread_spans is not available in procedural macros"
    953 | |         );
        | |_________^
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#missing_panics_doc
        = note: `-W clippy::missing-panics-doc` implied by `-W clippy::pedantic`
        = help: to override `-W clippy::pedantic` add `#[allow(clippy::missing_panics_doc)]`

Author: dtolnay

src/lib.rs

@@ -101,6 +101,7 @@
     clippy::let_underscore_untyped,
     clippy::manual_assert,
     clippy::manual_range_contains,
+    clippy::missing_panics_doc,
     clippy::missing_safety_doc,
     clippy::must_use_candidate,
     clippy::needless_doctest_main,