Fix cargo clippy issues (#115)

Reviewed-on: #115

src/lib.rs

@@ -378,7 +378,7 @@ impl GrammalecteClient {
         options: &HashMap<GramOpt, bool>,
     ) -> Result<CheckResult, Error> {
         let url = format!("{}/gc_text/fr", self.base_url);
-        log::debug!("Will use URL {} for spell check", url);
+        log::debug!("Will use URL {url} for spell check");
 
         let options = options
             .iter()
@@ -406,7 +406,7 @@ impl GrammalecteClient {
     /// Ask for word suggestion
     pub async fn suggest(&self, token: &str) -> Result<SuggestResult, Error> {
         let url = format!("{}/suggest/fr", self.base_url);
-        log::debug!("Will use URL {} for word suggestion", url);
+        log::debug!("Will use URL {url} for word suggestion");
 
         let mut params = HashMap::new();
         params.insert("token", token);