Fix typos via codespell

fileitemactionplugin/testing.md

@@ -8,7 +8,7 @@
     directly, for KF6 it is in the sub directory `kf6/kfileitemaction`)
   * `QT_DEBUG_PLUGINS` to 1 for verbose plugin detection.
   * `QT_XCB_NO_GRAB_SERVER` to 1 to prevent grabbing so the debugger is usable.
-5. Ignore warning that executable is no debug build, it is sufficiant when plugin is debug build.
+5. Ignore warning that executable is no debug build, it is sufficient when plugin is debug build.
 
 ## Testing against a development build of Dolphin
 1. Build the whole dependency chain up to `dolphin` installing it under some custom prefix.

plasmoid/lib/syncthingapplet.cpp

@@ -644,7 +644,7 @@ void SyncthingApplet::applySettings(int changeConnectionIndex)
     const KConfigGroup config = this->config();
     const auto &settings = Settings::values();
 
-    // apply notifiction settings
+    // apply notification settings
     settings.apply(m_notifier);
 
     // apply appearance settings

plasmoid/testing.md

@@ -26,7 +26,7 @@ rather than the regular home to separate testing from production.
     * If not already set, `QT_PLUGIN_PATH` is set to `$CMAKE_CURRENT_BINARY_DIR/plasmoid/lib` which
       should contain the plugin for the Plasmoid under `plasma/applets/*syncthingplasmoid*.so`.
     * Set `QT_DEBUG_PLUGINS` to 1 for verbose plugin detection (the verbose output might be suppressed
-      when starting via Qt Creator so it may be worthwile to start this from a terminal).
+      when starting via Qt Creator so it may be worthwhile to start this from a terminal).
 7. Ignore warning that executable is no debug build, it is sufficient when
    the plugin is a debug build (see next section for QML debugging).