fix issue template descriptions (#1310)

* fix incorrect api urls

* fix descriptions on issue templates

* revert b51914e

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Co-authored-by: Geometrically <18202329+Geometrically@users.noreply.github.com>

.github/ISSUE_TEMPLATE/1-app-bug.yml

@@ -1,5 +1,5 @@
 name: 🎮 Modrinth App bug
-description: Report an issue on the Modrinth website.
+description: Report an issue in the Modrinth Launcher.
 labels: [bug, app]
 body:
   - type: checkboxes

.github/ISSUE_TEMPLATE/3-api-bug.yml

@@ -1,5 +1,5 @@
 name: 🛠️ API issue (api.modrinth.com)
-description: Report an issue on the Modrinth website.
+description: Report an issue regarding the Modrinth API.
 labels: [bug, api]
 body:
   - type: checkboxes