Add dprint to install-tools task.

Author: Eric Githinji

xtask/src/main.rs

@@ -104,6 +104,7 @@ fn install_tools() -> Result<()> {
         vec!["mdbook-i18n-helpers", "--locked", "--version", "0.3.6"],
         vec!["i18n-report", "--locked", "--version", "0.2.0"],
         vec!["mdbook-linkcheck2", "--locked", "--version", "0.9.1"],
+        vec!["dprint", "--locked"],
         // Mdbook-exerciser and mdbook-course are located in this repository.
         // To make it possible to install them from any directory we need to
         // specify their path from the workspace root.