message: fixing path to spec in readme.md
diff: @@ -42,8 +42,8 @@ input-file:
  - microsoft.insights/stable/2016-03-01/alertRulesIncidents_API.json
  - microsoft.insights/stable/2016-03-01/alertRules_API.json
  - microsoft.insights/stable/2016-03-01/logProfiles_API.json
  -- microsoft.insights/stable/2017-05-01-preview/diagnosticsSettings_API.json
  -- microsoft.insights/stable/2017-05-01-preview/diagnosticsSettingsCategories_API.json
  +- microsoft.insights/preview/2017-05-01-preview/diagnosticsSettings_API.json
  +- microsoft.insights/preview/2017-05-01-preview/diagnosticsSettingsCategories_API.json
  - microsoft.insights/stable/2017-04-01/actionGroups_API.json
  - microsoft.insights/stable/2017-04-01/activityLogAlerts_API.json
  - microsoft.insights/stable/2015-04-01/activityLogs_API.json
  @@ -66,8 +66,8 @@ input-file:
  - microsoft.insights/stable/2016-03-01/alertRulesIncidents_API.json
  - microsoft.insights/stable/2016-03-01/alertRules_API.json
  - microsoft.insights/stable/2016-03-01/logProfiles_API.json
  -- microsoft.insights/stable/2017-05-01-preview/diagnosticsSettings_API.json
  -- microsoft.insights/stable/2017-05-01-preview/diagnosticsSettingsCategories_API.json
  +- microsoft.insights/preview/2017-05-01-preview/diagnosticsSettings_API.json
  +- microsoft.insights/preview/2017-05-01-preview/diagnosticsSettingsCategories_API.json
  - microsoft.insights/stable/2017-04-01/actionGroups_API.json
  - microsoft.insights/stable/2017-04-01/activityLogAlerts_API.json
  ```
  