Added pair to the scope section of the cheatsheet (#2771)

Fixes #2761

## Checklist

- [/] I have added
[tests](https://www.cursorless.org/docs/contributing/test-case-recorder/)
- [/] I have updated the
[docs](https://github.com/cursorless-dev/cursorless/tree/main/docs) and
[cheatsheet](https://github.com/cursorless-dev/cursorless/tree/main/cursorless-talon/src/cheatsheet)
- [/] I have not broken the cheatsheet

Author: AndreasArvidsson

cursorless-talon/src/cheatsheet/sections/scopes.py

@@ -23,4 +23,14 @@ def get_scopes():
                 },
             ],
         },
+        {
+            "id": "pair",
+            "type": "scopeType",
+            "variations": [
+                {
+                    "spokenForm": "<pair>",
+                    "description": "Paired delimiters",
+                },
+            ],
+        },
     ]