Renames method as it is not printing anything but rather building and…

… returning a string

Fixes: SIRI-960

src/main/java/sirius/kernel/health/Exceptions.java

@@ -499,7 +499,7 @@ public static Throwable getRootCause(@Nullable Throwable throwable) {
      * @param throwable the throwable to generate the stack trace for
      * @return a string representation of the stack trace without the error message
      */
-    public static String printStackTraceWithoutErrorMessage(Throwable throwable) {
+    public static String buildStackTraceWithoutErrorMessage(Throwable throwable) {
         StringBuilder stringBuilder = new StringBuilder();
 
         stringBuilder.append(throwable.getClass().getName()).append(":").append("\n");