clippy: FlashKind: implement from instead of into

crates/ezidam/src/page/flash.rs

@@ -22,8 +22,8 @@ impl Display for FlashKind {
     }
 }
 
-impl Into<String> for FlashKind {
-    fn into(self) -> String {
-        self.to_string()
+impl From<FlashKind> for String {
+    fn from(value: FlashKind) -> Self {
+        value.to_string()
     }
 }