Fix some typos in Documentation/: 'A'

This patch fixes typos in various Documentation txts.
This patch addresses some words starting with the letter 'A'.

Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Acked-by: Alan Cox <alan@redhat.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
diff --git a/Documentation/eisa.txt b/Documentation/eisa.txt
index 8c8388d..e00fd0c 100644
--- a/Documentation/eisa.txt
+++ b/Documentation/eisa.txt
@@ -18,7 +18,7 @@
 
     - The bus code implements most of the generic code. It is shared
     among all the architectures that the EISA code runs on. It
-    implements bus probing (detecting EISA cards avaible on the bus),
+    implements bus probing (detecting EISA cards available on the bus),
     allocates I/O resources, allows fancy naming through sysfs, and
     offers interfaces for driver to register.