fix typo & renamed variables

src/controllers/runtime/RuntimeMetadataController.ts

@@ -94,10 +94,10 @@ export default class RuntimeMetadataController extends AbstractController<Runtim
 		}
 
 		// Validation of the `metadataVersion` path parameter.
-		const versionM = metadataVersion.slice(1);
+		const metadataV = metadataVersion.slice(1);
 		const version = this.parseNumberOrThrow(
-			versionM,
-			`Version ${metadataVersion.slice(1).toString()} of metadata provided is not a number.`,
+			metadataV,
+			`Version ${metadataV.toString()} of metadata provided is not a number.`,
 		);
 
 		const regExPattern = new RegExp('^[vV][0-9]+$');

src/controllers/transaction/TransactionMaterialController.ts

@@ -107,7 +107,7 @@ export default class TransactionMaterialController extends AbstractController<Tr
 	}
 
 	/**
-	 * Get the chain's metadata at the reuqested version in JSON or scale format
+	 * Get the chain's metadata at the requested version in JSON or scale format
 	 * depending on the `metadata` query param.
 	 *
 	 * @param _req Express Request