clean up trailing whitespace

src/zc/buildout/update.txt

@@ -21,7 +21,7 @@ Let's update the sample buildout.cfg to look in this area:
     ... index = %(new_releases)s
     ... parts = show-versions
     ... develop = showversions
-    ... 
+    ...
     ... [show-versions]
     ... recipe = showversions
     ... """ % dict(new_releases=new_releases))
@@ -31,7 +31,7 @@ zc.buildout used:
 
     >>> mkdir(sample_buildout, 'showversions')
 
-    >>> write(sample_buildout, 'showversions', 'showversions.py', 
+    >>> write(sample_buildout, 'showversions', 'showversions.py',
     ... """
     ... import pkg_resources
     ...
@@ -52,7 +52,7 @@ zc.buildout used:
     >>> write(sample_buildout, 'showversions', 'setup.py',
     ... """
     ... from setuptools import setup
-    ... 
+    ...
     ... setup(
     ...     name = "showversions",
     ...     entry_points = {'zc.buildout': ['default = showversions:Recipe']},
@@ -80,7 +80,7 @@ new versions found in new releases:
 
 Our buildout script has been updated to use the new eggs:
 
-    >>> cat(sample_buildout, 'bin', 'buildout') 
+    >>> cat(sample_buildout, 'bin', 'buildout')
     #!/usr/local/bin/python2.4
     <BLANKLINE>
     import sys
@@ -107,7 +107,7 @@ buildout will install earlier versions of these packages:
     ... develop = showversions
     ... zc.buildout-version = < 99
     ... setuptools-version = < 99
-    ... 
+    ...
     ... [show-versions]
     ... recipe = showversions
     ... """ % dict(new_releases=new_releases))
@@ -126,7 +126,7 @@ Now we can see that we actually "upgrade" to an earlier version.
     setuptools 0.6
 
 There are a number of cases, described below, in which the updates
-don't happen. 
+don't happen.
 
 We won't upgrade in offline mode:
 
@@ -137,7 +137,7 @@ We won't upgrade in offline mode:
     ... index = %(new_releases)s
     ... parts = show-versions
     ... develop = showversions
-    ... 
+    ...
     ... [show-versions]
     ... recipe = showversions
     ... """ % dict(new_releases=new_releases))
@@ -166,9 +166,9 @@ directory:
     ... [buildout]
     ... find-links = %(new_releases)s
     ... index = %(new_releases)s
-    ... parts = 
+    ... parts =
     ... """ % dict(new_releases=new_releases))
-    
+
     >>> cd(sample_buildout2)
     >>> print system(buildout),
     Creating directory '/sample_buildout2/bin'.