Documentation: Docbook: Fix generated DocBook/kernel-api.xml

This patch fix spelling typo found in DocBook/kernel-api.xml.
It is because the file is generated from the source comments,
I have to fix the comments in source codes.

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

lib/bitmap.c

@@ -882,7 +882,7 @@ EXPORT_SYMBOL(bitmap_bitremap);
  * read it, you're overqualified for your current job.)
  *
  * In other words, @orig is mapped onto (surjectively) @dst,
- * using the the map { <n, m> | the n-th bit of @relmap is the
+ * using the map { <n, m> | the n-th bit of @relmap is the
  * m-th set bit of @relmap }.
  *
  * Any set bits in @orig above bit number W, where W is the
@@ -930,7 +930,7 @@ EXPORT_SYMBOL(bitmap_bitremap);
  *
  *  Further lets say we use the following code, invoking
  *  bitmap_fold() then bitmap_onto, as suggested above to
- *  avoid the possitility of an empty @dst result:
+ *  avoid the possibility of an empty @dst result:
  *
  *	unsigned long *tmp;	// a temporary bitmap's bits
  *

lib/idr.c

@@ -625,7 +625,7 @@ static void __idr_remove_all(struct idr *idp)
  * idr_destroy().
  *
  * A typical clean-up sequence for objects stored in an idr tree will use
- * idr_for_each() to free all objects, if necessay, then idr_destroy() to
+ * idr_for_each() to free all objects, if necessary, then idr_destroy() to
  * free up the id mappings and cached idr_layers.
  */
 void idr_destroy(struct idr *idp)

lib/vsprintf.c

@@ -1937,7 +1937,7 @@ EXPORT_SYMBOL(sprintf);
  * @args: Arguments for the format string
  *
  * The format follows C99 vsnprintf, except %n is ignored, and its argument
- * is skiped.
+ * is skipped.
  *
  * The return value is the number of words(32bits) which would be generated for
  * the given input.