docs(readme): use Context7 favicon as badge logo

Author: zeative

README.md

@@ -20,7 +20,7 @@
   <a href="https://github.com/zeative/zaileys"><img src="https://img.shields.io/github/stars/zeative/zaileys" alt="GitHub Stars"></a>
   <a href="https://github.com/zeative/zaileys"><img src="https://img.shields.io/github/forks/zeative/zaileys" alt="GitHub Forks"></a>
   <a href="https://deepwiki.com/zeative/zaileys"><img src="https://deepwiki.com/badge.svg" alt="Ask DeepWiki"></a>
-  <a href="https://context7.com/zeative/zaileys"><img src="https://img.shields.io/badge/Context7-LLM%20Docs-4F46E5?logo=data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZpZXdCb3g9IjAgMCAyNCAyNCIgZmlsbD0id2hpdGUiPjxwYXRoIGQ9Ik00IDRoMTZ2MTZINHoiLz48L3N2Zz4=" alt="Context7"></a>
+  <a href="https://context7.com/zeative/zaileys"><img src="https://img.shields.io/badge/Context7-LLM%20Docs-4F46E5?logo=data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEoAAABLCAYAAADXjBHUAAAACXBIWXMAAAsTAAALEwEAmpwYAAABaWlDQ1BEaXNwbGF5IFAzAAB4nHWQvUvDUBTFT6tS0DqIDh0cMolD1NIKdnFoKxRFMFQFq1OafgltfCQpUnETVyn4H1jBWXCwiFRwcXAQRAcR3Zw6KbhoeN6XVNoi3sfl%2FTicc7lcwBtQGSv2AijplpFMxKS11Lrke4OHnlOqZrKooiwK%2Fv276%2FPR9d5PiFlNu3YQ2U9cl84ul3aeAlN%2F%2FV3Vn8maGv3f1EGNGRbgkYmVbYsJ3iUeMWgp4qrgvMvHgtMunzuelWSc%2BJZY0gpqhrhJLKc79HwHl4plrbWD2N6f1VeXxRzqUcxhEyYYilBRgQQF4X%2F8044%2Fji1yV2BQLo8CLMpESRETssTz0KFhEjJxCEHqkLhz634PrfvJbW3vFZhtcM4v2tpCAzidoZPV29p4BBgaAG7qTDVUR%2Bqh9uZywPsJMJgChu8os2HmwiF3e38M6Hvh%2FGMM8B0CdpXzryPO7RqFn4Er%2FQcXKWq8MSlPPgAABA5JREFUeAHtmzFME2EUgB%2BGQXCgGCSBpeiICRjERROKoYtG4kANC6kDasLCAgNLO%2BBcBxgYxIHiZhkgRJcahcgmJB1k1HaBBBLtomHTezXVu%2F%2Bu9N3de03Q9yUM%2FcPlb7%2F%2B79279%2F9tap4bfwdKXZqtv2FQ6nIOFBIqioiKIqKiiKgoIiqKiIoioqKIqCgiKoqIiiKioog0Q0hil3th%2BcEU%2BGX78z5M5pZ8XZObmIX%2B7ij4JbGagcJhEcIQWhTS034J%2FFIKcE2kpTXQXHhdWDT0iKgoIqFDr3BYguK3Y0dIlKzXK7tbp16H%2F%2BOX7N4WbFm57TSS12Ou9xJkLpPQoson3%2BGRlZTzj9N%2FxqLWGy2f%2FIDFndfASbaO%2FNRIwpXDxl5mKl9kWFhCD7%2Flmc2sY%2BzZvSTErvRCo%2Bjv7oF0POEYe%2Fo2B4WDInDAlqMWrNVjhsWLxBREzl8AaXCO3MSMY2x9%2FyPM53PABWsyx7oIQ64KhmAqPgbS4BxmyM1urgAnrKIwaS58cOal6Vt3ob%2BrB6TALwPnsIMhx5GX7LCXB4s7bxyrCslY%2BUqK9EjCNVYv6QeBXRTeBbO77x1jmNQlVhWuJiwH7KAk7tWEiBScG1YiNUkODAE3nqtpj381ISKiCgclV%2FglB4eBmyGP8qNeQRoUEVEYfqWvR46xyPlW1roKuxbmnU5KEiL2rIePNiZ9jHmqzyowTUoCuamKmCivhHqty38vqRa4oihzciEmqlR2v%2BkgTbdaePWYzuSK8oLzcSYaoIEXhoaKamvhExVpkX%2BGtNPUPDf%2BE5S6aIeTiIoioqKIqCgiKooIywaoF1jneFXPXE%2F3yYGYa2z7y75YdS4mCh%2BAsWduBytnLlGpuHvHZfLVkiXqDLVZ%2FkXERLV5PK5whgX2vFxzClbrYqJ62jtcY1x7bEipfOSeM9IBUoiJikY6XWOYbLnw6ndFL3aCFGKivFoqXh8uKBuf3H15zn6XiYgoLA282rScOQrbzWbrtzJvRKb9IiLKqzcusde27rHbM3r1BkggImr65h3Ha876yc6qJd%2Fc7bnfOwgSsIvCarzfaPxzHpawg%2BFnbuHjapY4RcMuytw%2Bl1pNVXAL38x9KY%2BN0bCwisLt7UatpirVg2x2cEV5PQuGgU1U5YiP8U3iiTvJ1VQF737m6b7M6MNAJ4hrwSZqbWLGdXZyPr8GjQLnsocg7kwvJ%2Fyff68FiyhcSfaQQ0nx5%2FOVsGgUONfvOf%2FeBTEEuY4chd6Fwbtc%2Fkna93UYLvjB%2FIAHaoPc0QYX5kL%2FcuG%2FaLPoLxcaiIoiEroVXCwfB6qVpH65wDWXiW6pE9HQI6KiiKgoIiqKiIoioqKIqCgiKoqIiiKiooioKCIqiojVPWi6DUpdfgE8wFukKedIwQAAAABJRU5ErkJggg%3D%3D" alt="Context7"></a>
 </div>
 
 <br>