fix typography syntax example (#151)

Author: ntno

documentation/docs/elements/examples/typography.md

@@ -2,7 +2,7 @@
 
 Emphasis, aka italics, with *asterisks* or _underscores_.  
 Strong emphasis, aka bold, with **asterisks** or __underscores__.  
-Combined emphasis with **asterisks and _underscores_**.  
+Combined emphasis with **_asterisks and underscores_**.  
 Strikethrough uses two tildes. ~~Scratch this.~~
 
 CH~3~CH~2~OH  

documentation/docs/elements/typography.md

@@ -2,12 +2,12 @@
 
 Emphasis, aka italics, with *asterisks* or _underscores_.  
 Strong emphasis, aka bold, with **asterisks** or __underscores__.  
-Combined emphasis with **asterisks and _underscores_**.  
+Combined emphasis with **_asterisks and underscores_**.  
 
 ```markdown
 Emphasis, aka italics, with *asterisks* or _underscores_.  
 Strong emphasis, aka bold, with **asterisks** or __underscores__.  
-Combined emphasis with **asterisks and _underscores_**.  
+Combined emphasis with **_asterisks and underscores_**.  
 ```
 
 # Strikethrough