Fix release version for config.file

Signed-off-by: Joe Adams <github@joeadams.io>

Author: sysadmind

README.md

@@ -77,7 +77,7 @@ elasticsearch_exporter --help
 | web.telemetry-path      | 1.0.2                 | Path under which to expose metrics.                                                                                                                                                                                                                                                                                                                                                   | /metrics |
 | aws.region              | 1.5.0                 | Region for AWS elasticsearch                                                                                                                                                                                                                                                                                                                                                          | |
 | aws.role-arn            | 1.6.0                 | Role ARN of an IAM role to assume.                                                                                                                                                                                                                                                                                                                                                    | |
-| config.file             | 2.0.0                 | Path to a YAML configuration file that defines `auth_modules:` used by the `/probe` multi-target endpoint. Leave unset when not using multi-target mode.                                                                                                                                                                                                                              | |
+| config.file             | 1.10.0                 | Path to a YAML configuration file that defines `auth_modules:` used by the `/probe` multi-target endpoint. Leave unset when not using multi-target mode.                                                                                                                                                                                                                              | |
 | version                 | 1.0.2                 | Show version info on stdout and exit.                                                                                                                                                                                                                                                                                                                                                 | |
 
 Commandline parameters start with a single `-` for versions less than `1.1.0rc1`.