Messaging tweaks for `InstallUncaughtExceptionHandler` (#7622)

core/src/main/java/hudson/init/impl/InstallUncaughtExceptionHandler.java

@@ -37,10 +37,10 @@ public class InstallUncaughtExceptionHandler {
         }
         catch (SecurityException ex) {
             LOGGER.log(Level.SEVERE,
-                                                       "Failed to set the default UncaughtExceptionHandler.  " +
-                                                       "If any threads die due to unhandled coding errors then there will be no logging of this information.  " +
-                                                       "The lack of this diagnostic information will make it harder to track down issues which will reduce the supportability of Jenkins.  " +
-                                                       "It is highly recommended that you consult the documentation that comes with you servlet container on how to allow the " +
+                                                       "Failed to set the default UncaughtExceptionHandler. " +
+                                                       "If any threads die due to unhandled coding errors then there will be no logging of this information. " +
+                                                       "The lack of this diagnostic information will make it harder to track down issues which will reduce the supportability of Jenkins. " +
+                                                       "It is highly recommended that you consult the documentation that comes with your servlet container on how to allow the " +
                                                        "`setDefaultUncaughtExceptionHandler` permission and enable it.", ex);
         }
     }
@@ -100,7 +100,7 @@ public class InstallUncaughtExceptionHandler {
             // if this was an OutOfMemoryError then all bets about logging are off - but in the absence of anything else...
             LOGGER.log(Level.SEVERE,
                        "A thread (" + t.getName() + '/' + t.getId()
-                                     + ") died unexpectedly due to an uncaught exception, this may leave your Jenkins in a bad way and is usually indicative of a bug in the code.",
+                                     + ") died unexpectedly due to an uncaught exception. This may leave your server corrupted and usually indicates a software bug.",
                        ex);
         }