Rename peptide to revolt in API and About screen

This commit renames the `peptide` field to `revolt` in the `Root` data class and updates its usage in the `AboutScreen` to reflect this change.

app/src/main/java/chat/peptide/api/routes/misc/Root.kt

@@ -9,7 +9,7 @@ import kotlinx.serialization.Serializable
 
 @Serializable
 data class Root(
-    val peptide: String,
+    val revolt: String,
     val features: Features,
     val ws: String,
     val app: String,

app/src/main/java/chat/peptide/screens/about/AboutScreen.kt

@@ -72,7 +72,7 @@ class AboutViewModel : ViewModel() {
             "App Version" to BuildConfig.VERSION_NAME,
             "App Type" to BuildConfig.FLAVOUR_ID,
             "API Host" to URI(PeptideAPI.getCurrentBaseUrl()).host,
-            "API Version" to (root?.peptide ?: "Unknown"),
+            "API Version" to (root?.revolt ?: "Unknown"),
             "Runtime SDK" to Build.VERSION.SDK_INT.toString(),
             "Model" to "${Build.MANUFACTURER} ${
                 Build.DEVICE.replaceFirstChar {