Replace geometry spec URLs

Mostly:

```diff
-https://drafts.fxtf.org/geometry/
+https://drafts.csswg.org/geometry/
```

Author: caugner

api/DOMMatrix.json

@@ -267,7 +267,7 @@
       "worker_support": {
         "__compat": {
           "description": "Available in workers",
-          "spec_url": "https://drafts.fxtf.org/geometry/#DOMMatrix",
+          "spec_url": "https://drafts.csswg.org/geometry/#dom-dommatrix-dommatrix",
           "tags": [
             "web-features:dom-geometry"
           ],

api/DOMMatrixReadOnly.json

@@ -73,7 +73,7 @@
       "worker_support": {
         "__compat": {
           "description": "Available in workers",
-          "spec_url": "https://drafts.fxtf.org/geometry/#DOMMatrix",
+          "spec_url": "https://drafts.csswg.org/geometry/#dom-dommatrixreadonly-dommatrixreadonly",
           "tags": [
             "web-features:dom-geometry"
           ],
@@ -1597,7 +1597,7 @@
         "__compat": {
           "description": "`toString()`",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/DOMMatrixReadOnly/toString",
-          "spec_url": "https://drafts.fxtf.org/geometry/#dommatrixreadonly-stringification-behavior",
+          "spec_url": "https://drafts.csswg.org/geometry/#dommatrixreadonly-stringification-behavior",
           "tags": [
             "web-features:dom-geometry"
           ],

api/DOMPoint.json

@@ -73,7 +73,7 @@
       "worker_support": {
         "__compat": {
           "description": "Available in workers",
-          "spec_url": "https://drafts.fxtf.org/geometry/#DOMPoint",
+          "spec_url": "https://drafts.csswg.org/geometry/#dom-dompoint-dompoint",
           "tags": [
             "web-features:dom-geometry"
           ],

api/DOMPointReadOnly.json

@@ -73,7 +73,7 @@
       "worker_support": {
         "__compat": {
           "description": "Available in workers",
-          "spec_url": "https://drafts.fxtf.org/geometry/#DOMPoint",
+          "spec_url": "https://drafts.csswg.org/geometry/#dom-dompoint-dompoint",
           "tags": [
             "web-features:dom-geometry"
           ],

api/DOMQuad.json

@@ -73,7 +73,7 @@
       "worker_support": {
         "__compat": {
           "description": "Available in workers",
-          "spec_url": "https://drafts.fxtf.org/geometry/#DOMQuad",
+          "spec_url": "https://drafts.csswg.org/geometry/#dom-domquad-domquad",
           "tags": [
             "web-features:dom-geometry"
           ],

api/DOMRect.json

@@ -134,7 +134,7 @@
       "worker_support": {
         "__compat": {
           "description": "Available in workers",
-          "spec_url": "https://drafts.fxtf.org/geometry/#DOMRect",
+          "spec_url": "https://drafts.csswg.org/geometry/#dom-domrect-domrect",
           "tags": [
             "web-features:dom-geometry"
           ],

api/DOMRectReadOnly.json

@@ -139,7 +139,7 @@
       "worker_support": {
         "__compat": {
           "description": "Available in workers",
-          "spec_url": "https://drafts.fxtf.org/geometry/#DOMRect",
+          "spec_url": "https://drafts.csswg.org/geometry/#dom-domrectreadonly-domrectreadonly",
           "tags": [
             "web-features:dom-geometry"
           ],