riscv: alternatives: fix a typo in comment

In the usage of ALTERNATIVE, "always" is misspelled as "alwyas".
Signed-off-by: Yuan Tan <tanyuan@tinylab.org>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20230723165155.4896-1-tanyuan@tinylab.orgSigned-off-by: Palmer Dabbelt <palmer@rivosinc.com>

arch/riscv/include/asm/alternative-macros.h

@@ -146,7 +146,7 @@
  * vendor_id: The CPU vendor ID.
  * patch_id: The patch ID (erratum ID or cpufeature ID).
  * CONFIG_k: The Kconfig of this patch ID. When Kconfig is disabled, the old
- *	     content will alwyas be executed.
+ *	     content will always be executed.
  */
 #define ALTERNATIVE(old_content, new_content, vendor_id, patch_id, CONFIG_k) \
 	_ALTERNATIVE_CFG(old_content, new_content, vendor_id, patch_id, CONFIG_k)