sysfs/cpu: Fix typos in vulnerability documentation

Fixes: 87590ce ("sysfs/cpu: Add vulnerability folder")
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

Author: dwmw2

Documentation/ABI/testing/sysfs-devices-system-cpu

@@ -378,7 +378,7 @@ What:		/sys/devices/system/cpu/vulnerabilities
 		/sys/devices/system/cpu/vulnerabilities/meltdown
 		/sys/devices/system/cpu/vulnerabilities/spectre_v1
 		/sys/devices/system/cpu/vulnerabilities/spectre_v2
-Date:		Januar 2018
+Date:		January 2018
 Contact:	Linux kernel mailing list <linux-kernel@vger.kernel.org>
 Description:	Information about CPU vulnerabilities
 
@@ -388,4 +388,4 @@ Description:	Information about CPU vulnerabilities
 
 		"Not affected"	  CPU is not affected by the vulnerability
 		"Vulnerable"	  CPU is affected and no mitigation in effect
-		"Mitigation: $M"  CPU is affetcted and mitigation $M is in effect
+		"Mitigation: $M"  CPU is affected and mitigation $M is in effect