fix: mark ghost and performance plugin as private (#29)

Author: EsadCetiner

README.md

@@ -27,8 +27,8 @@ maps the regular CRS IDs from 900K for each rule to the range 9,900,000 - 9,999,
 | phpmyadmin-rule-exclusions          | 9,513,000 - 9,513,999 | [coreruleset/phpmyadmin-rule-exclusions-plugin](https://github.com/coreruleset/phpmyadmin-rule-exclusions-plugin)       | official  | ✅ tested | ![Integration tests](https://github.com/coreruleset/phpmyadmin-rule-exclusions-plugin/actions/workflows/integration.yml/badge.svg) |
 | dos-protection-modsecurity          | 9,514,000 - 9,514,999 | [coreruleset/dos-protection-plugin-modsecurity](https://github.com/coreruleset/dos-protection-plugin-modsecurity)       | official  | untested            |      |
 | machine-learning-integration-plugin | 9,516,000 - 9,516,999 | [coreruleset/machine-learning-integration-plugin](https://github.com/coreruleset/machine-learning-integration-plugin)   | official  | draft               |      |
-| performance-plugin                  | 9,517,000 - 9,517,999 | [coreruleset/performance-plugin](https://github.com/coreruleset/performance-plugin)                                     | official  | draft               |      |
-| ghost-rule-exclusions               | 9,518,000 - 9,518,999 | [coreruleset/ghost-rule-exclusions-plugin](https://github.com/coreruleset/ghost-rule-exclusions-plugin)                 | official  | draft               |      |
+| performance-plugin                  | 9,517,000 - 9,517,999 | [coreruleset/performance-plugin](https://github.com/coreruleset/performance-plugin)                                     | official  | draft (Private)     |      |
+| ghost-rule-exclusions               | 9,518,000 - 9,518,999 | [coreruleset/ghost-rule-exclusions-plugin](https://github.com/coreruleset/ghost-rule-exclusions-plugin)                 | official  | draft (Private)     |      |
 | roundcube-rule-exclusions-plugin    | 9,519,000 - 9,519,999 | [EsadCetiner/roundcube-rule-exclusions-plugin](https://github.com/EsadCetiner/roundcube-rule-exclusions-plugin)         | 3rd party | ✅ tested | ![Integration tests](https://github.com/EsadCetiner/roundcube-rule-exclusions-plugin/actions/workflows/integration.yml/badge.svg) |
 | sogo-rule-exclusions-plugin         | 9,520,000 - 9,520,999 | [EsadCetiner/sogo-rule-exclusions-plugin](https://github.com/EsadCetiner/sogo-rule-exclusions-plugin)                   | 3rd party | ✅ tested | ![Integration tests](https://github.com/EsadCetiner/sogo-rule-exclusions-plugin/actions/workflows/integration.yml/badge.svg) |
 | iredadmin-rule-exclusions-plugin    | 9,521,000 - 9,521,999 | [EsadCetiner/iredadmin-rule-exclusions-plugin](https://github.com/EsadCetiner/iredadmin-rule-exclusions-plugin)         | 3rd party | ✅ tested | ![Integration tests](https://github.com/EsadCetiner/iredadmin-rule-exclusions-plugin/actions/workflows/integration.yml/badge.svg) |