Quote relationship identifiers with spaces (#587)

Co-authored-by: Lopes Lenny <[email protected]>

Author: lennymlopes

src/utils/exportAs/dbml.js

@@ -108,7 +108,7 @@ export function toDBML(diagram) {
       (f) => f.id === rel.endFieldId,
     );
 
-    return `Ref ${rel.name} {\n\t${quoteIdentifier(startTableName)}.${quoteIdentifier(startFieldName)} ${cardinality(rel)} ${quoteIdentifier(endTableName)}.${quoteIdentifier(endFieldName)} [ delete: ${rel.deleteConstraint.toLowerCase()}, update: ${rel.updateConstraint.toLowerCase()} ]\n}`;
+    return `Ref ${quoteIdentifier(rel.name)} {\n\t${quoteIdentifier(startTableName)}.${quoteIdentifier(startFieldName)} ${cardinality(rel)} ${quoteIdentifier(endTableName)}.${quoteIdentifier(endFieldName)} [ delete: ${rel.deleteConstraint.toLowerCase()}, update: ${rel.updateConstraint.toLowerCase()} ]\n}`;
   };
 
   let enumDefinitions = "";