Update Cheatsheet guide wording (#1876)

Cheatsheet.cheatmd

@@ -1,16 +1,15 @@
-# Cheatsheet User Guide
+# Cheatsheet Example
 
-This document is a cheatsheet on how to use cheatsheets.
-Cheatsheets are Markdown files with the `.cheatmd` extension. You may also check the source of this document as a reference.
+Cheatsheets are Markdown files with the `.cheatmd` extension which support a limited range of elements and formatting. Refer to the source of this document to see the relevant Markdown.
 
-## I'm a H2 title with 2 columns
+## H2 title
 {: .col-2}
 
-### I'm a H3 title
+### H3 title
 
-#### I'm a H4 title.
+#### H4 title
 
-And this is a paragraph.
+A paragraph.
 
 ### Code
 
@@ -30,7 +29,7 @@ Greeter.greet("world")
 
 Paragraphs are also supported and can quote `code`.
 
-Several paragraphs are visually distinct.
+Paragraphs are visually distinct from one another.
 
 ### Lists
 
@@ -64,7 +63,7 @@ Several paragraphs are visually distinct.
 * example 2
 ```
 
-Variants customize how your cheatsheet looks like via Markdown's inline attribute notation.
+Variants change presentation via Markdown's inline attribute notation.
 
 ### Header variants
 
@@ -146,11 +145,11 @@ Add `wrap` to wrap long lines.
 
 ### Ordered lists
 
-1. I'm first;
-2. You are second;
-3. We are third;
+1. First
+2. Second
+3. Third
 
-Here's an extra paragraph after the list.
+An extra paragraph after the list.
 
 ### With headings and code links
 
@@ -203,12 +202,12 @@ Add `{: .list-4}` after the H3 title to make large lists.
 
 ## Full page
 
-This is the default.
+The default.
 
 ## Half width
 {: .width-50}
 
-### I make tables look nicer
+### Avoid overly long lines
 
 #### Time
 
@@ -219,7 +218,7 @@ This is the default.
 
 Add `{: .width-50}` after the H2 title to use only half width.
 
-## Column left reference
+## Column left example
 {: .col-2-left}
 
 ### One
@@ -257,4 +256,4 @@ IO.puts "Hello, " <> user.name
 
 ### Four
 
-I'm a grid, with 1/3 - 2/3 width.
+A grid, with 1/3 - 2/3 widths.