Fix typos in \offset documentation (issue 322040043 by address@hidden)

[david . nalesnik]

Reviewers: ,

Description:
Fix typos in \offset documentation

- Fix errors in description of OttavaBracket example
- Minor improvements in wording

Please review this at https://codereview.appspot.com/322040043/

Affected files (+5, -4 lines):
  M Documentation/notation/changing-defaults.itely


Index: Documentation/notation/changing-defaults.itely
diff --git a/Documentation/notation/changing-defaults.itely  
b/Documentation/notation/changing-defaults.itely
index  
7fad344bb6ee3cc4d281e36d49e55bbf77363115..5373e4f399fa3fcb17d7775032be5b7d801894c6  
100644
--- a/Documentation/notation/changing-defaults.itely
+++ b/Documentation/notation/changing-defaults.itely
@@ -2783,10 +2783,11 @@ The following example displaces the @q{broken}  
@code{OttavaBracket}
 object through its @code{staff-padding} property.  Since the property
 takes a @code{number}, @var{offsets} is provided with a list of
 @code{number}s to account for the two segments created by the line
-break.  The slur piece on the first line is effectively untouched since
address@hidden is added to its default value.  The segment on the second
-line is raised two staff-spaces from its default height.  The default
-height happens to be @code{2}, though it is not necesssary to know this.
+break.  The bracket piece on the first line is effectively untouched
+since @code{0} is added to its default value of @code{staff-padding}.
+The segment on the second line is raised three staff-spaces from its
+default height.  The default height happens to be @code{2}, though it is
+not necessary to know this to achieve the desired positioning.

 @lilypond[quote,verbatim]
 {