feat: Address clippy lint

Author: lu-zero

src/lib.rs

@@ -360,7 +360,7 @@ impl UriTemplate {
                         }
                         let pairs: Vec<String> = a
                             .iter()
-                            .map(|&(ref k, ref v)| {
+                            .map(|(k, v)| {
                                 format!("{},{}", &encode_reserved(k), &encoder(v))
                             })
                             .collect();
@@ -370,7 +370,7 @@ impl UriTemplate {
                         if named {
                             let pairs: Vec<String> = a
                                 .iter()
-                                .map(|&(ref k, ref v)| {
+                                .map(|(k, v)| {
                                     let val: String = if v.is_empty() {
                                         format!("{}{}", &encode_reserved(k), ifemp)
                                     } else {
@@ -383,7 +383,7 @@ impl UriTemplate {
                         } else {
                             let pairs: Vec<String> = a
                                 .iter()
-                                .map(|&(ref k, ref v)| {
+                                .map(|(k, v)| {
                                     format!("{}={}", &encode_reserved(k), &encoder(v))
                                 })
                                 .collect();