add . to return description

pdf-generator/Controllers/EvaluationReportController.cs

@@ -29,7 +29,7 @@ namespace PDFGenerator.Controllers
         /// Generates the PDF for an evaluation report.
         /// </summary>
         /// <param name="evaluationReport">Evaluation report for which the PDF should be rendered.</param>
-        /// <returns>PDF document as byte array</returns>
+        /// <returns>PDF document as byte array.</returns>
         [HttpPost("RenderReport")]
         [RequestSizeLimit(100000000)]
         public byte[] RenderReport([FromBody] PDFGenerator.Models.EvaluationReport evaluationReport)