fix: default Solidity language string

src/artifacts/mod.rs

@@ -53,13 +53,11 @@ pub(crate) type VersionedFilteredSources = BTreeMap<Solc, (Version, FilteredSour
 const SOLIDITY: &str = "Solidity";
 const YUL: &str = "Yul";
 
-///
-/// Default `language` field is set to `"SOLIDITY"`.
-/// This indicates the language used for the compiler input is Solidity.
+/// Default `language` field is set to `"Solidity"`.
 impl Default for CompilerInput {
     fn default() -> Self {
         CompilerInput {
-            language: "SOLIDITY".to_string(),
+            language: SOLIDITY.to_string(),
             sources: Sources::default(),
             settings: Settings::default(),
         }