update mapping examples in rename docs
replace commas in example mapping files with the required tabs
@@ -46,16 +46,16 @@ The mappings for renaming should be specified with the `--mappings` (for full re
For a full rename (you can use prefixes as long as they are defined by the defaults, `--prefix`, or `--add-prefix`):
-```
-Old IRI,New IRI
-obo:BFO_0000051,fb:BFO_1234567
+```tsv
+Old IRI New IRI
+obo:BFO_0000051 fb:BFO_1234567
```
For a prefix rename:
-```
-Old Base,New Base
-http://purl.obolibrary.org/obo/,http://foo.bar/
+```tsv
+Old Base New Base
+http://purl.obolibrary.org/obo/ http://foo.bar/
```
The `rename` command expects the first line to contain headers.
