Style: Cleanup uses of double spaces between words

Or after punctuation. Tried to leave third-party stuff alone, unless it has
been heavily modified for Godot.

platform/android/java/gradlew.bat

@@ -1,7 +1,7 @@
 @if "%DEBUG%" == "" @echo off
 @rem ##########################################################################
 @rem
-@rem  Gradle startup script for Windows
+@rem Gradle startup script for Windows
 @rem
 @rem ##########################################################################
 
@@ -75,7 +75,7 @@ if "%ERRORLEVEL%"=="0" goto mainEnd
 :fail
 rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
 rem the _cmd.exe /c_ return code!
-if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
 exit /b 1
 
 :mainEnd

platform/android/java/lib/res/values/strings.xml

@@ -6,7 +6,7 @@
     <string name="text_button_resume_cellular">Resume download</string>
     <string name="text_button_wifi_settings">Wi-Fi settings</string>
     <string name="text_verifying_download">Verifying Download</string>
-    <string name="text_validation_complete">XAPK File Validation Complete.  Select OK to exit.</string>
+    <string name="text_validation_complete">XAPK File Validation Complete. Select OK to exit.</string>
     <string name="text_validation_failed">XAPK File Validation Failed.</string>
     <string name="text_button_pause">Pause Download</string>
     <string name="text_button_resume">Resume Download</string>

platform/android/java/lib/src/org/godotengine/godot/vulkan/VkSurfaceView.kt

@@ -115,7 +115,7 @@ open internal class VkSurfaceView(context: Context) : SurfaceView(context), Surf
 	/**
 	 * Tear down the rendering thread.
 	 *
-	 * Must not be called  before a [VkRenderer] has been set.
+	 * Must not be called before a [VkRenderer] has been set.
 	 */
 	fun onDestroy() {
 		vkThread.blockingExit()