docs: clarify that bucketing keys are strings (#185)

## This PR

- clarifies that bucketing keys are strings

### Related Issues

open-feature/flagd#1601

Signed-off-by: Michael Beemer <[email protected]>

Author: beeme1mr

json/targeting.json

@@ -476,7 +476,7 @@
       "$comment": "there seems to be a bug here, where ajv gives a warning (not an error) because maxItems doesn't equal the number of entries in items, though this is valid in this case",
       "items": [
         {
-          "description": "Bucketing value used in pseudorandom assignment; should be unique and stable for each subject of flag evaluation. Defaults to a concatenation of the flagKey and targetingKey.",
+          "description": "Bucketing value used in pseudorandom assignment; should be a string that is unique and stable for each subject of flag evaluation. Defaults to a concatenation of the flagKey and targetingKey.",
           "$ref": "#/definitions/anyRule"
         },
         {

json/targeting.yaml

@@ -397,7 +397,7 @@ definitions:
     $comment: there seems to be a bug here, where ajv gives a warning (not an error) because maxItems doesn't equal the number of entries in items, though this is valid in this case
     items:
       - description:
-          Bucketing value used in pseudorandom assignment; should be unique
+          Bucketing value used in pseudorandom assignment; should be a string that is unique
           and stable for each subject of flag evaluation. Defaults to a concatenation
           of the flagKey and targetingKey.
         $ref: "#/definitions/anyRule"