Fix typos in Documentation/: 'B'-'C'

This patch fixes typos in various Documentation txts. This patch addresses some
words starting with the letters 'B'-'C'.  There are also a few grammar fixes
thrown in for Randy. ;)

Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
diff --git a/Documentation/input/yealink.txt b/Documentation/input/yealink.txt
index 0962c5c..8bf2add 100644
--- a/Documentation/input/yealink.txt
+++ b/Documentation/input/yealink.txt
@@ -93,7 +93,7 @@
   Format specifier
     '8' :  Generic 7 segment digit with individual addressable segments
 
-    Reduced capabillity 7 segm digit, when segments are hard wired together.
+    Reduced capability 7 segm digit, when segments are hard wired together.
     '1' : 2 segments digit only able to produce a 1.
     'e' : Most significant day of the month digit,
           able to produce at least 1 2 3.