Fix test valid only for some DB.

 * Parameter name may not always have the '@' prefix, it could be nothing (Oracle, positionned), ':' (Postgres) or '?' (MySql)

Author: fredericDelaporte

src/NHibernate.Test/Async/NHSpecificTest/Logs/LogsFixture.cs

@@ -109,7 +109,7 @@ public async Task WillGetSessionIdFromSessionLogsConcurrentAsync()
 				for (var j = 0; j < 10; j++)
 				{
 					var sessionId = sessionIds[i];
-					Assert.That(loggingEvent, Does.Contain($"@p0 = {i * 10 + j} [Type: Int32 (0:0:0)] | SessionId: {sessionId}"));
+					Assert.That(loggingEvent, Does.Contain($"p0 = {i * 10 + j} [Type: Int32 (0:0:0)] | SessionId: {sessionId}"));
 				}
 			}
 		}

src/NHibernate.Test/NHSpecificTest/Logs/LogsFixture.cs

@@ -98,7 +98,7 @@ public void WillGetSessionIdFromSessionLogsConcurrent()
 				for (var j = 0; j < 10; j++)
 				{
 					var sessionId = sessionIds[i];
-					Assert.That(loggingEvent, Does.Contain($"@p0 = {i * 10 + j} [Type: Int32 (0:0:0)] | SessionId: {sessionId}"));
+					Assert.That(loggingEvent, Does.Contain($"p0 = {i * 10 + j} [Type: Int32 (0:0:0)] | SessionId: {sessionId}"));
 				}
 			}
 		}