Changed spelling of "etag".

Signed-off-by: rakekniven <mark.ziegler@rakekniven.de>

test/testremotediscovery.cpp

@@ -167,7 +167,7 @@ private slots:
         QCOMPARE(completeSpy.findItem("nofileid")->_instruction, CSYNC_INSTRUCTION_ERROR);
         QCOMPARE(completeSpy.findItem("nopermissions")->_instruction, CSYNC_INSTRUCTION_NEW);
         QCOMPARE(completeSpy.findItem("nopermissions/A")->_instruction, CSYNC_INSTRUCTION_ERROR);
-        QVERIFY(completeSpy.findItem("noetag")->_errorString.contains("etag"));
+        QVERIFY(completeSpy.findItem("noetag")->_errorString.contains("ETag"));
         QVERIFY(completeSpy.findItem("nofileid")->_errorString.contains("file id"));
         QVERIFY(completeSpy.findItem("nopermissions/A")->_errorString.contains("permissions"));
     }