fix links

src/intro/hardware.md

@@ -12,7 +12,7 @@ Let's get familiar with the hardware we'll be working with.
 ## STM32F3DISCOVERY (the "F3")
 
 <p align="center">
-<img title="F3" src="assets/f3.jpg">
+<img title="F3" src="/assets/f3.jpg">
 </p>
 
 We'll refer to this board as "F3" throughout this book.
@@ -49,4 +49,3 @@ What does this board contain?
 
 - There's a second USB port, labeled "USB USER" that is connected to the main microcontroller, the
   STM32F303VCT6, and can be used in applications.
-

src/intro/install/linux.md

@@ -96,7 +96,7 @@ $ #  ^^^^
 
 If `uucp` appears in the output. You are all set! Go to the [next section]. Otherwise, keep reading:
 
-[next section]: intro/install/verify.html
+[next section]: ../verify.html
 
 - Add yourself to the `uucp` group.
 

src/intro/install/macos.md

@@ -26,4 +26,4 @@ Caskroom/tap` first and try again.
 
 That's all! Go to the [next section].
 
-[next section]: 03-setup/verify.html
+[next section]: ../verify.html

src/intro/install/windows.md

@@ -59,4 +59,4 @@ instructions and make sure you install the right (32-bit or 64-bit) version of t
 
 That's all! Go to the [next section].
 
-[next section]: intro/install/verify.html
+[next section]: ../verify.html