fixed url

Author: khoroshevskyi

docs/geofetch/howto_prefetch.md docs/geofetch/howto-prefetch.mddocs/geofetch/howto_prefetch.md renamed to docs/geofetch/howto-prefetch.md

@@ -7,4 +7,5 @@ varies depending on your operating system.
 
 ### Documentation:
 The best way to install the NCBI SRA Toolkit is to follow the official instructions:
-https://github.com/ncbi/sra-tools/wiki/01.-Downloading-SRA-Toolkit
+
+[Official NCBI SRA Toolkit Installation Guide](https://github.com/ncbi/sra-tools/wiki/01.-Downloading-SRA-Toolkit)

mkdocs.yml

@@ -123,7 +123,7 @@ nav:
       - Specifying samples to download: geofetch/file-specification.md
       - Set SRA data download location: geofetch/howto-location.md
       - Run SRA convert: geofetch/code/howto-sra-to-fastq.md
-      - Install prefetch: geofetch/howto_prefetch.md
+      - Install prefetch: geofetch/howto-prefetch.md
     - Reference:
       - How to cite: citations.md
       - API: geofetch/code/python-api.md