modify follow-fork-mode tip (#2339)

pwndbg/lib/tips.py

@@ -9,7 +9,7 @@ from pwndbg.color import message
 TIPS: List[str] = [
     # GDB hints
     "GDB's `apropos <topic>` command displays all registered commands that are related to the given <topic>",
-    "GDB's `follow-fork-mode` parameter can be used to set whether to trace parent or child after fork() calls",
+    "GDB's `follow-fork-mode` parameter can be used to set whether to trace parent or child after fork() calls. Pwndbg sets it to child by default",
     'Use GDB\'s `dprintf` command to print all calls to given function. E.g. `dprintf malloc, "malloc(%p)\\n", (void*)$rdi` will print all malloc calls',
     "Use GDB's `pi` command to run an interactive Python console where you can use Pwndbg APIs like `pwndbg.gdblib.memory.read(addr, len)`, `pwndbg.gdblib.memory.write(addr, data)`, `pwndbg.gdb.vmmap.get()` and so on!",
     "GDB's `set directories <path>` parameter can be used to debug e.g. glibc sources like the malloc/free functions!",