Update AudioStreamGeneratorPlayback.xml

Fixed incorrect method description for `get_frames_available`.
According to [The AudioStreamGenerator source](https://github.com/godotengine/godot/blob/master/servers/audio/effects/audio_stream_generator.cpp#L132), the `get_frames_available` method should return the space remaining in the sample buffer.

(cherry picked from commit 7823ca1367)
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Fireflash 2022-09-10 21:39:13 +10:00 committed by Rémi Verschelde
parent 6997482dbf
commit 239b2e4bbc
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@ -27,7 +27,7 @@
<method name="get_frames_available" qualifiers="const">
<return type="int" />
<description>
Returns the number of audio data frames left to play. If this returned number reaches [code]0[/code], the audio will stop playing until frames are added again. Therefore, make sure your script can always generate and push new audio frames fast enough to avoid audio cracking.
Returns the number of frames that can be pushed to the audio sample data buffer without overflowing it. If the result is [code]0[/code], the buffer is full.
</description>
</method>
<method name="get_skips" qualifiers="const">