doc: Documentation/cputopology.txt fix typo

Fix a trivial typo in Documentation/cputopology.txt

Signed-off-by: Xishi Qiu <qiuxishi@huawei.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/Documentation/cputopology.txt b/Documentation/cputopology.txt
index 902d315..0aad6de 100644
--- a/Documentation/cputopology.txt
+++ b/Documentation/cputopology.txt
@@ -22,7 +22,7 @@
 
 4) /sys/devices/system/cpu/cpuX/topology/thread_siblings:
 
-	internel kernel map of cpuX's hardware threads within the same
+	internal kernel map of cpuX's hardware threads within the same
 	core as cpuX
 
 5) /sys/devices/system/cpu/cpuX/topology/core_siblings: