fix an arch/alpha/Kconfig typo

Signed-off-by: Adrian Bunk <bunk@stusta.de>
diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig
index 2b36afd..7e55ea6 100644
--- a/arch/alpha/Kconfig
+++ b/arch/alpha/Kconfig
@@ -534,7 +534,7 @@
 	bool "Discontiguous Memory Support (EXPERIMENTAL)"
 	depends on EXPERIMENTAL
 	help
-	  Say Y to upport efficient handling of discontiguous physical memory,
+	  Say Y to support efficient handling of discontiguous physical memory,
 	  for architectures which are either NUMA (Non-Uniform Memory Access)
 	  or have huge holes in the physical address space for other reasons.
 	  See <file:Documentation/vm/numa> for more.