android: Fix typo and syntax in comments

Fix a typo and add missing commas.

Also, delete a blank line at the end of the file and
use /* */ for comments consistently.

Closes #1071

Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>

android/examples/unrooted_android.c

diff --git a/android/examples/unrooted_android.c b/android/examples/unrooted_android.c
index e4d52ba..33793c7 100644
--- a/android/examples/unrooted_android.c
+++ b/android/examples/unrooted_android.c
@@ -24,12 +24,12 @@
 
 /*
  * This example creates a shared object which can be accessed over JNA or JNI from Java or Kotlin in Android.
- * Hint: If you are using Android Studio set the "Debug type" to "Java Only" to receive debug messages.
+ * Hint: If you are using Android Studio, set the "Debug type" to "Java Only" to receive debug messages.
  */
 
 /*
  * Usage:
- * First you have to connect your USB device from the Java side.
+ * First, you have to connect your USB device from the Java side.
  * Use the android.hardware.usb class to find the USB device, claim the interfaces, and open the usb_device_connection
  * Obtain the native File Descriptor --> usb_device_connection.getFileDescriptor()
  * Pass the received int value to the unrooted_usb_description method of this code (over JNA)
@@ -270,7 +270,7 @@
 }
 
 
-// fileDescriptor = is the native File Descriptor obtained in Java and transfered to native over JNA for Example.
+/* fileDescriptor = the native file descriptor obtained in Java and transferred to native over JNA, for example */
 int unrooted_usb_description(int fileDescriptor)
 {
     libusb_context *ctx = NULL;
@@ -298,4 +298,3 @@
     print_device(libusb_get_device(devh), devh);
     return r;
 }
-

libusb/version_nano.h

diff --git a/libusb/version_nano.h b/libusb/version_nano.h
index f38faa3..3806cf8 100644
--- a/libusb/version_nano.h
+++ b/libusb/version_nano.h
@@ -1 +1 @@
-#define LIBUSB_NANO 11707
+#define LIBUSB_NANO 11708