Remove trailing whitespace

docs/changes.rst

@@ -57,7 +57,7 @@ New features:
 
 - borg check: will not produce the "Checking segments" output unless
   new --progress option is passed, #824.
-- options that imply output (--show-rc, --show-version, --list, --stats, 
+- options that imply output (--show-rc, --show-version, --list, --stats,
   --progress) don't need -v/--info to have that output displayed, #865
 - borg recreate: re-create existing archives, #787 #686 #630 #70, also see
   #757, #770.

docs/deployment.rst

@@ -157,7 +157,7 @@ Salt running on a Debian system.
 ::
 
   Install borg backup from pip:
-    pkg.installed: 
+    pkg.installed:
       - pkgs:
         - python3
         - python3-dev

src/borg/platform/posix.pyx

@@ -1,6 +1,6 @@
 cdef extern from "wchar.h":
     cdef int wcswidth(const Py_UNICODE *str, size_t n)
- 
+
 def swidth(s):
     str_len = len(s)
     terminal_width = wcswidth(s, str_len)