Base: Update crash(1) man page

Update the outdated list of options, mention UserspaceEmulator, update
example shell output.

Base/usr/share/man/man1/crash.md

@@ -10,36 +10,36 @@ $ crash [options]
 
 ## Description
 
-This program is used to test how the Serenity kernel handles
-userspace crashes, and can be used to simulate many different
-kinds of crashes.
+This program is used to test how the Serenity kernel or UserspaceEmulator
+handle userspace crashes, and can be used to simulate many different kinds
+of crashes.
 
 ## Options
 
-* `-A`: Test that all of the following crashes crash as intended.
+* `-A`: Test that all of the following crash types crash as expected.
 * `-s`: Perform a segmentation violation by dereferencing an invalid pointer.
 * `-d`: Perform a division by zero.
 * `-i`: Execute an illegal CPU instruction.
 * `-a`: Call `abort()`.
-* `-m`: Read a pointer from uninitialized memory, then read from it.
+* `-m`: Read a pointer from uninitialized malloc memory, then read from it.
 * `-f`: Read a pointer from memory freed using `free()`, then read from it.
-* `-M`: Read a pointer from uninitialized memory, then write to it.
+* `-M`: Read a pointer from uninitialized malloc memory, then write to it.
 * `-F`: Read a pointer from memory freed using `free()`, then write to it.
 * `-r`: Write to read-only memory.
 * `-T`: Make a syscall while using an invalid stack pointer.
 * `-t`: Trigger a page fault while using an invalid stack pointer.
 * `-S`: Make a syscall from writeable memory.
-* `-x`: Read from recently freed memory. (Tests an opportunistic malloc guard.)
-* `-y`: Write to recently freed memory. (Tests an opportunistic malloc guard.)
-* `-X`: Attempt to execute non-executable memory. (Not mapped with PROT\_EXEC.)
+* `-X`: Attempt to execute non-executable memory (Not mapped with PROT\_EXEC).
 * `-U`: Attempt to trigger an x86 User Mode Instruction Prevention fault.
 * `-I`: Use an x86 I/O instruction in userspace.
 * `-c`: Read the x86 TSC (Time Stamp Counter) directly.
+* `-p`: Violate `pledge()`'d promises.
+* `-n`: Perform a failing assertion.
 
 ## Examples
 
 ```sh
 $ crash -F
 Testing: "Write to freed memory"
-Shell: crash(33) exitied due to signal "Segmentation violation"
+Shell: Job 1 (crash -F) Segmentation violation
 ```