Update doc

doc/easy_align.txt

@@ -78,7 +78,7 @@ For example, if you want to align text around all occurrences of numbers:
 
 - <Enter>
 - *
-- <CTRL-/> or <CTRL-X>
+- <CTRL-/> (or <CTRL-X> on Gvim)
   - [0-9]\+
 
 
@@ -127,7 +127,7 @@ Notice that you can't append '\zs' to your regular expression to put delimiters
 on the left. It can be done by providing additional options in Vim dictionary
 format.
 
-- :EasyAlign * /[:;]\+/ { 'stick_to_left': 1, 'left_margin': '' }
+- :EasyAlign * /[:;]\+/ { 'stick_to_left': 1, 'left_margin': 0 }
 
 Then we get:
 
@@ -142,7 +142,14 @@ You can even omit spaces between the arguments, so concisely (or cryptically):
 
 - :EasyAlign*/[:;]\+/{'s':1,'l':''}
 
-Available options will be shown later in the document.
+The same thing can be done in the interactive mode as well with the following
+key combination.
+
+- <Enter>
+- *
+- <Left>
+- <CTRL-/> (or <CTRL-X> on GVim)
+  - [:;]\+
 
 
 Partial alignment in blockwise-visual mode