Adjust URLs of a few WICG specs following repos rename

This update adjusts the URLs of:
- CSS Parser API
- Input Device Capabilities
- Scroll To Text Fragment

See discussion in WICG/admin#112.

Shortnames will change accordingly.

specs.json

@@ -60,15 +60,15 @@
   "https://wicg.github.io/contact-api/spec/",
   "https://wicg.github.io/cookie-store/",
   "https://wicg.github.io/cors-rfc1918/",
-  "https://wicg.github.io/CSS-Parser-API/",
+  "https://wicg.github.io/css-parser-api/",
   "https://wicg.github.io/element-timing/",
   "https://wicg.github.io/entries-api/",
   "https://wicg.github.io/event-timing/",
   "https://wicg.github.io/frame-timing/",
   "https://wicg.github.io/geolocation-sensor/",
   "https://wicg.github.io/get-installed-related-apps/spec/",
   "https://wicg.github.io/import-maps/",
-  "https://wicg.github.io/InputDeviceCapabilities/",
+  "https://wicg.github.io/input-device-capabilities/",
   "https://wicg.github.io/js-self-profiling/",
   "https://wicg.github.io/keyboard-lock/",
   "https://wicg.github.io/keyboard-map/",
@@ -83,7 +83,7 @@
   "https://wicg.github.io/permissions-revoke/",
   "https://wicg.github.io/portals/",
   "https://wicg.github.io/priority-hints/",
-  "https://wicg.github.io/ScrollToTextFragment/",
+  "https://wicg.github.io/scroll-to-text-fragment/",
   "https://wicg.github.io/serial/",
   "https://wicg.github.io/shape-detection-api/",
   {