Update troubleshooting.md
Note that `[registries.search]` (the v1 format) is still supported, but
`registries.conf` can not mix v1 with v2 syntax.
[1]
@@ -72,8 +72,8 @@ error pulling image "fedora": unable to pull fedora: error getting default regis
#### Solution
* Verify that the `/etc/containers/registries.conf` file exists. If not, verify that the containers-common package is installed.
- * Verify that the entries in the `[registries.search]` section of the /etc/containers/registries.conf file are valid and reachable.
- * i.e. `registries = ['registry.fedoraproject.org', 'quay.io', 'registry.access.redhat.com']`
+ * Verify that the entries in the `unqualified-search-registries` list of the `/etc/containers/registries.conf` file are valid and reachable.
+ * i.e. `unqualified-search-registries = ["registry.fedoraproject.org", "quay.io", "registry.access.redhat.com"]`
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### 4) http: server gave HTTP response to HTTPS client
