Fix broken links

Author: RichardIrala

docs.json

@@ -1454,7 +1454,6 @@
                     "group": "Unity",
                     "pages": [
                       "ja/sdk/unity/overview",
-                      "ja/sdk/unity/quickstart",
                       "ja/sdk/unity/installation",
                       "ja/sdk/unity/setup",
                       "ja/sdk/unity/bootstrap_game",
@@ -1464,7 +1463,6 @@
                           "ja/sdk/unity/ecosystem-wallet/setup",
                           "ja/sdk/unity/ecosystem-wallet/authentication",
                           "ja/sdk/unity/ecosystem-wallet/manage-sessions",
-                          "ja/sdk/unity/ecosystem-wallet/permissions",
                           "ja/sdk/unity/ecosystem-wallet/blockchain"
                         ]
                       },
@@ -1474,7 +1472,6 @@
                           {
                             "group": "認証",
                             "pages": [
-                              "ja/sdk/unity/onboard/authentication/intro",
                               "ja/sdk/unity/onboard/authentication/email",
                               "ja/sdk/unity/onboard/authentication/oidc",
                               "ja/sdk/unity/onboard/authentication/playfab",
@@ -2437,7 +2434,6 @@
                     "group": "Unity",
                     "pages": [
                       "es/sdk/unity/overview",
-                      "es/sdk/unity/quickstart",
                       "es/sdk/unity/installation",
                       "es/sdk/unity/setup",
                       "es/sdk/unity/bootstrap_game",
@@ -2447,7 +2443,6 @@
                           "es/sdk/unity/ecosystem-wallet/setup",
                           "es/sdk/unity/ecosystem-wallet/authentication",
                           "es/sdk/unity/ecosystem-wallet/manage-sessions",
-                          "es/sdk/unity/ecosystem-wallet/permissions",
                           "es/sdk/unity/ecosystem-wallet/blockchain"
                         ]
                       },
@@ -2457,7 +2452,6 @@
                           {
                             "group": "Autenticación",
                             "pages": [
-                              "es/sdk/unity/onboard/authentication/intro",
                               "es/sdk/unity/onboard/authentication/email",
                               "es/sdk/unity/onboard/authentication/oidc",
                               "es/sdk/unity/onboard/authentication/playfab",