chore(docs): Update hash_commands.go (#3523)

add ctx for clarification when reading docs in comments

Author: omid-h70

hash_commands.go

@@ -116,16 +116,16 @@ func (c cmdable) HMGet(ctx context.Context, key string, fields ...string) *Slice
 
 // HSet accepts values in following formats:
 //
-//   - HSet("myhash", "key1", "value1", "key2", "value2")
+//   - HSet(ctx, "myhash", "key1", "value1", "key2", "value2")
 //
-//   - HSet("myhash", []string{"key1", "value1", "key2", "value2"})
+//   - HSet(ctx, "myhash", []string{"key1", "value1", "key2", "value2"})
 //
-//   - HSet("myhash", map[string]interface{}{"key1": "value1", "key2": "value2"})
+//   - HSet(ctx, "myhash", map[string]interface{}{"key1": "value1", "key2": "value2"})
 //
 //     Playing struct With "redis" tag.
 //     type MyHash struct { Key1 string `redis:"key1"`; Key2 int `redis:"key2"` }
 //
-//   - HSet("myhash", MyHash{"value1", "value2"}) Warn: redis-server >= 4.0
+//   - HSet(ctx, "myhash", MyHash{"value1", "value2"}) Warn: redis-server >= 4.0
 //
 //     For struct, can be a structure pointer type, we only parse the field whose tag is redis.
 //     if you don't want the field to be read, you can use the `redis:"-"` flag to ignore it,