Mark the course link as recommended to avoid confusion (#1331)

As per https://discord.com/channels/744385009028431943/744682430853808178/1372968301600178326

Author: pulkitkrishna00

coursepages/spd/README.md

@@ -4,7 +4,7 @@ This course has been developed by UBC and is available from Edx. We recommend yo
 
 > This programming course takes a unique approach, as it focuses on learning a systematic programming method rather than a programming language. This practical approach will help you channel your creativity so that you can program well in any language.
 
-**Course Link:** <https://learning.edx.org/course/course-v1:UBCx+SPD1x+2T2015>
+**Course Link (Recommended):** <https://learning.edx.org/course/course-v1:UBCx+SPD1x+2T2015>
 
 Alternative Links: