[docs update]字体更改

Author: Snailclimb

docs/.vuepress/styles/palette.scss

@@ -3,21 +3,17 @@ $sidebar-width: 20rem;
 $sidebar-mobile-width: 16rem;
 $font-family:
   -apple-system,
-  system-ui,
-  BlinkMacSystemFont,
+  Georgia,
+  SF Pro Text,
+  SF Pro Icons,
   Helvetica Neue,
-  PingFang SC,
-  Hiragino SansGB,
-  Microsoft YaHei,
-  Arial,
-  sans-serif;
+  PingFangTC-light,
+  PingFang-SC-light;
 $font-family-heading:
   -apple-system,
-  system-ui,
-  BlinkMacSystemFont,
+  Georgia,
+  SF Pro Text,
+  SF Pro Icons,
   Helvetica Neue,
-  PingFang SC,
-  Hiragino SansGB,
-  Microsoft YaHei,
-  Arial,
-  sans-serif;
+  PingFangTC-light,
+  PingFang-SC-light;