Update AudioAnalyzer docs to mention server limitations (#987)

## Changes

Updates AudioAnalyzer docs to note that audio processing is disabled on
the server

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---------

Co-authored-by: IgnisRBX <[email protected]>

Author: rbxphogen

content/en-us/reference/engine/classes/AudioAnalyzer.yaml

@@ -9,6 +9,8 @@ description: |
   `Class.AudioAnalyzer` takes measurements from audio streams that are wired to
   it through `Class.Wire`. It provides a single **Input** pin but does not
   produce any output streams.
+  Note that all audio processing is disabled on the server in order to conserve resources;
+  Properties and methods of `Class.AudioAnalyzer` return empty or zero results when used from server scripts.
 code_samples: []
 inherits:
   - Instance
@@ -20,7 +22,8 @@ properties:
       The loudest volume observed during the last audio buffer.
     description: |
       The loudest volume observed during the last audio buffer. This property
-      changes often and thus does not fire changed events.
+      changes more often than the framerate and does not fire changed events.
+      On the server, this property is always `0`.
     code_samples: []
     type: float
     tags:
@@ -46,6 +49,8 @@ properties:
       This property is generally more stable than
       `Class.AudioAnalyzer.PeakLevel|PeakLevel` but it may not capture momentary
       volume spikes.
+      This property changes more often than the framerate and does not fire changed events.
+      On the server, this property is always `0`.
     code_samples: []
     type: float
     tags:
@@ -116,8 +121,9 @@ methods:
     description: |
       Returns the frequency spectrum of the last audio buffer, as an array of
       numbers. The elements of the array are root-mean-square volume levels,
-      evenly spaced from 0 hertz to 24,000 hertz. If any of the analyzer's
-      inputs come from an `Class.AudioDeviceInput`, this method returns an empty
+      evenly spaced from 0 hertz to 24,000 hertz.
+      If any of the analyzer's
+      inputs come from an `Class.AudioDeviceInput`, or this method is used from a server script, it returns an empty
       array.
     code_samples: []
     parameters: []