capitalise comment, makes it easier to read.

h2/src/main/org/h2/result/ResultTempTable.java

@@ -151,11 +151,11 @@ public class ResultTempTable implements ResultExternal {
             synchronized (database) {
                 if (!database.isSysTableLocked()) {
                     Session sysSession = database.getSystemSession();
-                    // this session may not lock the sys table (except if it already has locked it)
-                    // because it must be committed immediately
+                    // This session may not lock the sys table (except if it already has locked it)
+                    // because it must be committed immediately,
                     // otherwise other threads can not access the sys table.
-                    // if the table is not removed now, it will be when the database
-                    // is opened the next time
+                    // If the table is not removed now, it will be when the database
+                    // is opened the next time.
                     // (the table is truncated, so this is just one record)
                     synchronized (sysSession) {
                         index.removeChildrenAndResources(sysSession);