Fix typos in Documentation/: 'Q'-'R'

This patch fixes typos in various Documentation txts. The patch addresses
some words starting with the letters 'Q'-'R'.

Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
diff --git a/Documentation/ibm-acpi.txt b/Documentation/ibm-acpi.txt
index 8b3fd82..71aa403 100644
--- a/Documentation/ibm-acpi.txt
+++ b/Documentation/ibm-acpi.txt
@@ -450,7 +450,7 @@
 
 No commands can be written to this file.
 
-EXPERIMENTAL: Embedded controller reigster dump -- /proc/acpi/ibm/ecdump
+EXPERIMENTAL: Embedded controller register dump -- /proc/acpi/ibm/ecdump
 ------------------------------------------------------------------------
 
 This feature is marked EXPERIMENTAL because the implementation