spec: quote in ticks

the open underscore was confusing some markdown parsers. Signed-off-by: Vincent Batts <vbatts@hashbangbash.com>
opencontainers · Feb 5, 2020 · 174c8ce · 174c8ce
1 parent 668a6a9
commit 174c8ce
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/spec.md b/spec.md
@@ -718,7 +718,7 @@ The response format is as follows:
 
 Repository listing is reserved for a future version of the distribution spec.
 
-The `_catalog` api is reserved for historical usage. Registries MAY implement _catalog, but are NOT required.
+The `_catalog` api is reserved for historical usage. Registries MAY implement `_catalog`, but are NOT required.
 
 ### Listing Image Tags