correct documentation

README.md

@@ -128,35 +128,37 @@ Here's an example of where each option is displayed.
 
 ![options](examples/images/options.jpg)
 
-### Formatting
+#### Line Items Table - Column Widths
 
-`details` and `line_items` allow inline formatting with Prawn. This allows you to use HTML tags to format text: `<b>` `<i>` `<u>` `<strikethrough>` `<sub>` `<sup>` `<font>` `<color>` `<link>`
+You may set an option to configure the line items table's columns width in order to accommodate shortcomings of Prawn's width guessing ability to render header and content reasonably sized.
+The configuration depends on your line item column count and follows the prawn/table configuration as documented [here](https://prawnpdf.org/prawn-table-manual.pdf):
 
-See [the Prawn docs](https://prawnpdf.org/api-docs/2.3.0/Prawn/Text.html#text-instance_method) for more information.
+This will size the second column to 400 and the fourth column to 50.
 
-#### Page Size
+```ruby
+column_widths: {1 => 400,3 => 50 }
+```
 
-You can specify a different page size by passing in the `page_size` keyword argument:
+This will set all column widths, considering your table has 4 columns.
 
 ```ruby
-receipt = Receipts::Receipt.new page_size: "A4"
+column_widths: [100, 200, 240]
 ```
 
-##### Line Items Table - Column Widths
+If not set, it will fall back to Prawn's default behavior.
 
-You can optionally configure the line items section's columns width in order to accommodate shortcomings of Prawn's width guessing ability to render header and content reasonably sized.
-The configuration depends on your line item column count and follows the prawn/table configuration as documented [here](https://prawnpdf.org/prawn-table-manual.pdf):
+### Formatting
 
-This will size the second column to 400 and the fourth column to 50.
+`details` and `line_items` allow inline formatting with Prawn. This allows you to use HTML tags to format text: `<b>` `<i>` `<u>` `<strikethrough>` `<sub>` `<sup>` `<font>` `<color>` `<link>`
 
-```ruby
-line_items: [data_array, column_widths: {1 => 400,3 => 50 }]
-```
+See [the Prawn docs](https://prawnpdf.org/api-docs/2.3.0/Prawn/Text.html#text-instance_method) for more information.
 
-This will set all column widths, considering your table has 4 columns.
+#### Page Size
+
+You can specify a different page size by passing in the `page_size` keyword argument:
 
 ```ruby
-line_items: [data_array, column_widths: [100, 200, 240]]
+receipt = Receipts::Receipt.new page_size: "A4"
 ```
 
 ### Internationalization (I18n)