Fix .intel_syntax directive

Author: chorman0773

src/inline-assembly.md

@@ -594,8 +594,8 @@ On x86 targets, both 32-bit and 64-bit, the following additional directives are
 - `.code32`
 - `.code64`
 
-Use of the `.att_syntax` and `.intel_syntax` directives with no parameters (or with parameters equivalent to the defaults) is supported, but the syntax must be restored to the option at entry (`.intel_syntax` without the `att_syntax` asm option, or `.att_syntax` with that option) or the behavior is undefined (the compiled output may be corrupted as a result).
-Use of `.att_syntax` and `.intel_syntax` with a non-default option (such as `.intel_syntax prefix` or `.att_syntax noprefix`) is unsupported.
+Use of the `.att_syntax` and `.intel_syntax` directives with the default parameters (`prefix` for `.att_syntax`, `noprefix` for `.intel_syntax`) is supported, but the syntax must be restored to the option at entry (`.intel_syntax noprefix` without the `att_syntax` asm option, or `.att_syntax prefix` with that option) or the behavior is undefined (the compiled output may be corrupted as a result).
+Use of `.att_syntax` and `.intel_syntax` with a non-default option or without an option (such as `.intel_syntax prefix` or `.att_syntax noprefix`) is unsupported, and has assembler specific behaviour.
 If operand interpolations are used between setting the syntax mode with one of these directives, and restoring it to the block's default, the behaviour is undefined.
 
 Use of `.code16`, `.code32`, and `.code64` directives are only supported if the state is reset to the default before exiting the assembly block.