fix: update README formatting and add missing horizontal rules

Author: SagarBiswas-MultiHAT

README.md

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 # phoneint (Phone Number OSINT)
 
+[![CI](https://img.shields.io/github/actions/workflow/status/SagarBiswas-MultiHAT/Phoneint-OSINT-Toolkit/ci.yml?branch=main)](https://github.com/SagarBiswas-MultiHAT/Phoneint-OSINT-Toolkit/actions) ![Python](https://img.shields.io/badge/python-3.11%2B-blue) ![License](https://img.shields.io/github/license/SagarBiswas-MultiHAT/Phoneint-OSINT-Toolkit) ![Ruff](https://img.shields.io/badge/lint-ruff-101010) ![Last commit](https://img.shields.io/github/last-commit/SagarBiswas-MultiHAT/Phoneint-OSINT-Toolkit)
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 `phoneint` parses and enriches phone numbers offline (via `phonenumbers`) and runs optional, pluggable async reputation checks to produce an auditable risk score and report. The goal is transparent, explainable OSINT with clear inputs, visible signals, and reproducible output.
 
 ## Disclaimer (Read First)
 
 **This tool is for lawful, ethical OSINT research only.**
 Do not use it to harass, stalk, dox, or violate privacy. Always comply with applicable laws and third-party Terms of Service.
 
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 ![](https://imgur.com/XCNwZsf.png)
 
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 ![](https://imgur.com/uHusxTO.png)
 
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 ## Table of Contents