Update sensehat readme formatting

hardware/sensehat/README.md

@@ -75,14 +75,13 @@ be sent in a single message by separating them with newline (\n) characters.
 
 #### Set the colour of individual pixels
 
-Format: `<x>,<y>,<colour>`
+Format: `<x>,<y>,<colour>`
 
 `x` and `y` must either be a value in the range 0-7, or `*` to indicate the entire row or column.
 
 `colour` must be one of:
 
-    - the well-known <a href="https://en.wikipedia.org/wiki/Web_colors" target="_new">HTML colour names</a>
-     - eg `red` or `aquamarine`,
+  - the well-known <a href="https://en.wikipedia.org/wiki/Web_colors" target="_new">HTML colour names</a> - eg `red` or `aquamarine`,
   - the <a href="http://cheerlights.com/cheerlights-api/">CheerLights colour names</a>,
   - a HEX colour value - eg `#aa9900`
   - an RGB triple - `190,255,0`
@@ -96,13 +95,13 @@ To set the four corners of the display to red, green (#00ff00), yellow and blue
 
 #### Rotate the screen
 
-Format: `R&lt;angle&gt;`
+Format: `R<angle>`
 
 `angle` must be 0, 90, 180 or 270.
 
 #### Flip the screen
 
-Format: `R&lt;axis&gt;`
+Format: `R<axis>`
 
 `axis` must be either `H` or `V` to flip on the horizontal or vertical axis respectively.