Docs: Kconfig: CORDIC description

This is just some copyediting.

Signed-off-by: Michael Witten <mfwitten@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/lib/Kconfig b/lib/Kconfig
index d8c8a16..abff69d 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -272,9 +272,8 @@
 config CORDIC
 	tristate "CORDIC algorithm"
 	help
-	  The option provides arithmetic function using CORDIC algorithm
-	  so its calculations are in fixed point. Modules can select this
-	  when they require this function. Module will be called cordic.
+	  This option provides an implementation of the CORDIC algorithm;
+	  calculations are in fixed point. Module will be called cordic.
 
 config LLIST
 	bool