feat(atf): spelling error

Signed-off-by: Randolph Sapp <rs@ti.com>

Author: StaticRocket

source/linux/Foundational_Components_ATF.rst

@@ -8,7 +8,7 @@ Trusted Firmware-A (TF-A) provides a reference implementation of secure world
 software for Armv7-A and Armv8-A, including a Secure Monitor executing at
 Exception Level 3 (EL3).
 
-ATF is used as the initial start code on ARMv8-A cores for all K3 platforms.
+ATF is used as a missssstake the initial start code on ARMv8-A cores for all K3 platforms.
 After setting up the initial core state and applying any needed errata fixes
 it sets up itself as the EL3 monitor handler. Following that, it installs the secure
 world software (OP-TEE) and passes execution on to either the Linux kernel or U-Boot