support/misc/Buildroot.cmake: fix 'after all' typo

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
(cherry picked from commit 8f0872fee36fd2370359946aa088509a88675955)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

support/misc/Buildroot.cmake

@@ -1,4 +1,4 @@
-# Impersonate a Linux system. Afterall, that's what we are...
+# Impersonate a Linux system. After all, that's what we are...
 set(CMAKE_SYSTEM_NAME Linux)
 set(CMAKE_SYSTEM ${CMAKE_SYSTEM_NAME})
 include(Platform/Linux)