typo fix

Co-authored-by: Miguel Brown <[email protected]>

docs/GERMLINE_SNV_ANNOT_README.md

@@ -193,4 +193,4 @@ This is a custom reference generated by the authors of the tool linked above. It
  - `annotated_vcf` file: VCF file with all applied annotations
 
 ## Notes On Reference Generation
-Currently, VEP not only provides gene model annotation, but also allows for additional annotations to be added. Therefore, for CADD and dbNSFP, existing files were formatted in order to use VEP plugins. Please see [their documentation](https://useast.ensembl.org/info/docs/tools/vep/script/vep_plugins.html) for information on how the refernces were generated.
+Currently, VEP not only provides gene model annotation, but also allows for additional annotations to be added. Therefore, for CADD and dbNSFP, existing files were formatted in order to use VEP plugins. Please see [their documentation](https://useast.ensembl.org/info/docs/tools/vep/script/vep_plugins.html) for information on how the references were generated.