fix farm links

content/page/grid/cta/cta.md

@@ -5,6 +5,6 @@ image: ./zero_os.png
 button: Learn More
 link: /tech
 button2: Expand The Grid
-link2: https://farming.threefold.io/farm
+link2: /farm
 ---
 A self-driving and lightweight operating system that can be booted on most modern computers. Once installed, Zero-OS locks the hardware and makes it accessible only via the ThreeFold Blockchain. No technical knowledge or maintenance is required, allowing anyone to join the cloud revolution. 

content/page/grid/grid.md

@@ -10,7 +10,7 @@ header_altImg: threefold
 header_excerpt: Powered by the ThreeFold Blockchain, anyone can now provide and utilize cloud capacity without any intermediaries. A new cloud era has arrived, one governed by the people.
 solution_image: 
 button: Take Part
-link: https://farming.threefold.io/farm
+link: /farm
 brandPanel: grid_brandPanel
 brandPanel2: grid_brandPanel2
 brandPanel3: grid_brandPanel3

content/page/home/partenerships/partner1/index.md

@@ -4,7 +4,7 @@ img: ./become_farmer_new.jpg
 title: BECOME A FARMER
 subtitle: AND EARN TF TOKENS
 button: Become a Farmer
-link: https://farming.threefold.io/farm
+link: /farm
 ---
 
 Expand the network even further by becoming a ThreeFold Farmer and earn a new digital currency as passive income, TFT.