Fixes

README.md

@@ -15,6 +15,7 @@
   + MobaXterm [download](http://mobaxterm.mobatek.net/download-home-edition.html)
 
   > Remarks: In Windows, there is a default command line, called command prompt. However, the names of many commands is different and some commands do not exist. For that reason, use another terminal, such as MobaXterm.
+  
 + **Mac**
   + iTerm2 [download](https://www.iterm2.com/downloads.html)
   + Terminal
@@ -25,11 +26,11 @@
 
 #### Background information
 
-+ What is SSH?
++ **What is SSH?**
 
 <img src="images/screen3.png" width=600>
 
-* What is a SSH key pair?
+* **What is a SSH key pair?**
 
 <img src="images/screen4.jpg" width=400>