update readme about italics

README.md

@@ -143,9 +143,10 @@ There are special characters used for:
 
 ```plain
 An `italic section of text` will have a single backtick on either side.
+An *italic section of text* may also have a single asterisk on either side.
 ```
 
-Italic text needs to have a space before, then a backtick or grave accent (\`) that touches the first character of the italic text, then the italic text, then a backtick or grave accent (\`) that touches the last character of the italic text, then a space.
+Italic text needs to have a space before, then a backtick or grave accent (\`) that touches the first character of the italic text, then the italic text, then a backtick or grave accent (\`) that touches the last character of the italic text, then a space. The backticks may also be asterisks.
 
 ![](https://raw.githubusercontent.com/OpenDroneMap/docs/publish/source/readme-img/reST_syntax_italic_transifex.png)
 ![](https://raw.githubusercontent.com/OpenDroneMap/docs/publish/source/readme-img/reST_syntax_italic_en.png)