Fix typo (and GDK error in query execution)

src/libs/routes/spatial.js

@@ -292,7 +292,7 @@ spatialApp.get('/educational', rqf.parse(), rqf.build(), (req, res, next) => {
 
     const schoolClassYearQry = squel.select()
         .field('MAX(matricula.ano_censo)')
-        .from('turma')
+        .from('matricula')
         .toString();
 
     const enrollmentsQry = req.sql.clone()