Fix page link. Add '/' when needed.

Add .gitignore file

docs/helios64/button.md

@@ -3,7 +3,7 @@
 ![Button Location](img/button/button.jpg)
 
 !!! note
-    All the above on-board buttons are also exposed on the [Front Panel](/helios64/front-panel).
+    All the above on-board buttons are also exposed on the [Front Panel](/helios64/front-panel/).
 
 ### Power Button
 

docs/helios64/i2c.md

@@ -76,7 +76,7 @@ This I2C device works with 3 pin bus (SDA, SCL, and GND), and also in band addre
 
 ### UEXT Header (P2)
 
-The I2C Bus 7 can be found on the [UEXT header (P2)](/helios64/uext).
+The I2C Bus 7 can be found on the [UEXT header (P2)](/helios64/uext/).
 
 ![P2 Location](/helios64/img/i2c/uext.jpg)
 

docs/helios64/intro.md

@@ -6,7 +6,7 @@ Helios64 is a powerful ARM board specially designed for Network Attached Storage
 
 ![Helios64](/helios64/img/intro/helios64.png)
 
-Helios64 is our latest design for the ultimate ARM powered NAS. Compared to the [Helios4](/helios4/intro), it offers improvement on every single key aspect :
+Helios64 is our latest design for the ultimate ARM powered NAS. Compared to the [Helios4](/helios4/intro/), it offers improvement on every single key aspect :
 
 * More storage capacity with 5x SATA ports,
 * Greater network throughput with Multi-Gigabit Ethernet (2.5 GbE),

docs/helios64/spi.md

@@ -44,7 +44,7 @@ This flash contains
 |-----|-------------|---------|
 |  2  | 0 | User Application |
 
-SPI Bus for user application is exposed on [UEXT header (P2)](/helios64/uext)
+SPI Bus for user application is exposed on [UEXT header (P2)](/helios64/uext/)
 
 ![P2 Location](/helios64/img/spi/uext.jpg)
 

docs/helios64/uext.md

@@ -33,7 +33,7 @@ Below is the full pinout of the UEXT header:
 Refer to the respective pages directly:
 
 - [SPI](/helios64/hardware/)
-- [I2C](/helios64/I2C/)
+- [I2C](/helios64/i2c/)
 
 ## RS232 (UART)