Clean up references in doc comments in language crate (#6729)

This PR cleans up a handful of references in doc comments in the
`language` crate so that `rustdoc` will link and display them correctly.

Release Notes:

- N/A

crates/language/src/language.rs

@@ -298,10 +298,12 @@ pub trait LspAdapter: 'static + Send + Sync {
         delegate: &dyn LspAdapterDelegate,
     ) -> Option<LanguageServerBinary>;
 
-    /// Returns true if a language server can be reinstalled.
-    /// If language server initialization fails, a reinstallation will be attempted unless the value returned from this method is false.
+    /// Returns `true` if a language server can be reinstalled.
+    ///
+    /// If language server initialization fails, a reinstallation will be attempted unless the value returned from this method is `false`.
+    ///
     /// Implementations that rely on software already installed on user's system
-    /// should have [`can_be_reinstalled`] return false.
+    /// should have [`can_be_reinstalled`](Self::can_be_reinstalled) return `false`.
     fn can_be_reinstalled(&self) -> bool {
         true
     }
@@ -313,7 +315,7 @@ pub trait LspAdapter: 'static + Send + Sync {
 
     fn process_diagnostics(&self, _: &mut lsp::PublishDiagnosticsParams) {}
 
-    /// A callback called for each [`lsp_types::CompletionItem`] obtained from LSP server.
+    /// A callback called for each [`lsp::CompletionItem`] obtained from LSP server.
     /// Some LspAdapter implementations might want to modify the obtained item to
     /// change how it's displayed.
     async fn process_completion(&self, _: &mut lsp::CompletionItem) {}
@@ -335,7 +337,7 @@ pub trait LspAdapter: 'static + Send + Sync {
         None
     }
 
-    /// Returns initialization options that are going to be sent to a LSP server as a part of [`lsp_types::InitializeParams`]
+    /// Returns initialization options that are going to be sent to a LSP server as a part of [`lsp::InitializeParams`]
     fn initialization_options(&self) -> Option<Value> {
         None
     }