Tweaks to RST formatting.

IPython/core/history.py

@@ -348,9 +348,8 b" def magic_history(self, parameter_s = ''):"
        the given file.  The file is always overwritten, though IPython asks for
        confirmation first if it already exists.
        
-    Example
-    -------
-
+    Examples
+    --------
     ::
     
       In [6]: %hist -n 4 6

IPython/core/magic.py

@@ -2607,9 +2607,8 b' Defaulting color scheme to \'NoColor\'"""'
     def magic_pwd(self, parameter_s = ''):
         """Return the current working directory path.
         
-        Example
-        -------
-        
+        Examples
+        --------
         ::
         
           In [9]: pwd
@@ -2649,9 +2648,8 b' Defaulting color scheme to \'NoColor\'"""'
         Note that !cd doesn't work for this purpose because the shell where
         !command runs is immediately discarded after executing 'command'.
         
-        Example
+        Examples
         --------
-        
         ::
         
           In [10]: cd parent/child