Tr: More small fixes

Change-Id: I5d9324d3f64eaa522fa1d435efa39fa43d84798a
Reviewed-by: Jarek Kobus <jaroslaw.kobus@qt.io>
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@qt.io>

src/plugins/compilerexplorer/compilerexplorereditor.cpp

@@ -484,7 +484,7 @@ void CompilerWidget::doCompile()
             }
         } catch (const std::exception &e) {
             Core::MessageManager::writeDisrupting(
-                Tr::tr("Failed to compile: \"%1\"").arg(QString::fromUtf8(e.what())));
+                Tr::tr("Failed to compile: \"%1\".").arg(QString::fromUtf8(e.what())));
         }
     });