[ENH] Clarify that recording entity may be used to distinguish recording instruments (#2090)

* slightly expand the definition of `acq`

* add example

* Update proposed change from `acq` to `recording`

* Update entities.yaml

* fix line length

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Co-authored-by: Seyed (Yahya) Shirazi <[email protected]>
Co-authored-by: Chris Markiewicz <[email protected]>
Co-authored-by: Julia-Katharina Pfarr <[email protected]>

Author: 4 people

src/schema/objects/entities.yaml

@@ -259,7 +259,8 @@ recording:
   description: |
     The `recording-<label>` entity can be used to distinguish continuous recording files.
 
-    This entity is commonly applied when continuous recordings have different sampling frequencies or start times.
+    This entity is commonly applied when continuous recordings are from different acquisition instruments,
+    or have different sampling frequencies or start times.
     For example, physiological recordings with different sampling frequencies may be distinguished using
     labels like `recording-100Hz` and `recording-500Hz`.
   type: string