[l10n] Make x-load capability localization Chromium-compatible.

Author: hackademix

src/_locales/de/messages.json

@@ -779,7 +779,7 @@
         "message": "Sonstiges",
         "description": ""
     },
-    "cap_x-load": {
+    "cap_x_load": {
         "message": "x-load",
         "description": "Capability for file:// documents to load subresources from a different and non descendant directory."
     },

src/_locales/en/messages.json

@@ -584,7 +584,7 @@
   "cap_other": {
     "message": "other"
   },
-  "cap_x-load": {
+  "cap_x_load": {
     "message": "x-load",
     "description": "Capability for file:// documents to load subresources from a different and non descendant directory."
   },

src/_locales/fr/messages.json

@@ -779,7 +779,7 @@
         "message": "autre",
         "description": ""
     },
-    "cap_x-load": {
+    "cap_x_load": {
         "message": "x-load",
         "description": "Capability for file:// documents to load subresources from a different and non descendant directory."
     },

src/_locales/ru/messages.json

@@ -779,7 +779,7 @@
         "message": "other",
         "description": ""
     },
-    "cap_x-load": {
+    "cap_x_load": {
         "message": "x-load",
         "description": "Capability for file:// documents to load subresources from a different and non descendant directory."
     },

src/_locales/tr/messages.json

@@ -779,7 +779,7 @@
         "message": "diğer",
         "description": ""
     },
-    "cap_x-load": {
+    "cap_x_load": {
         "message": "x-load",
         "description": "Capability for file:// documents to load subresources from a different and non descendant directory."
     },

src/_locales/zh_CN/messages.json

@@ -779,7 +779,7 @@
         "message": "其他",
         "description": ""
     },
-    "cap_x-load": {
+    "cap_x_load": {
         "message": "x-load",
         "description": "Capability for file:// documents to load subresources from a different and non descendant directory."
     },

src/ui/ui.js

@@ -460,7 +460,9 @@ var UI = (() => {
           capInput.id = `capability-${capability}-${idSuffix}`
           capLabel.setAttribute("for", capInput.id);
           capInput.value = capability;
-          capInput.title = capLabel.textContent = _(`cap_${capability}`) || capability.replace(/_/g, ' ');
+          capInput.title = capLabel.textContent =
+            _(`cap_${capability.replace("-", "_")}`) ||
+            capability.replace(/_/g, " ");
           const clone = capParent.appendChild(cap.cloneNode(true));
           clone.classList.add(capability);
           return clone;