Replace absolute link with relative link

Author: mribeirodantas

docs/hello_nextflow/03_hello_workflow.md

@@ -368,7 +368,7 @@ In theory this should handle any arbitrary number of input files.
 
     Some command-line tools require providing an argument (like `-input`) for each input file.
     In that case, we would have to do a little bit of extra work to compose the command.
-    You can see an example of this in the [Nextflow for Genomics](https://training.nextflow.io/latest/nf4_science/genomics/) training course.
+    You can see an example of this in the [Nextflow for Genomics](../nf4_science/genomics/) training course.
 
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