fix(lapis-docs): correct invalid gene in example (#1165)

Author: anna-parker

lapis-docs/src/content/docs/concepts/variant-query.mdx

@@ -45,7 +45,7 @@ or the AA change S:234A:
 Get the sequences with at least 3 out of five mutations/deletions:
 
 ```
-[3-of: 123A, 234T, S:345-, ORF1a:456K, ORF7:567-]
+[3-of: 123A, 234T, S:345-, ORF1a:456K, ORF7A:100-]
 ```
 
 Get the sequences that fulfill exactly 2 out of 4 conditions: