Docs: fix extra spaces in the comparison.md

Author: Igor Oparin

docs/rtk-query/comparison.md

@@ -75,8 +75,8 @@ This comparison table strives to be as accurate and as unbiased as possible. If
 | **API Definition**                     | declarative                             | on use, declarative      | GraphQL schema                                                                      | GraphQL schema                                                                                              |
 | **Cache by**                           | endpoint + serialized arguments         | user-defined query-key   | type/id                                                                             | type/id?                                                                                                    |
 | **Invalidation Strategy + Refetching** | declarative, by type and/or type/id     | manual by cache key      | automatic cache updates on per-entity level, manual query invalidation by cache key | declarative, by type OR automatic cache updates on per-entity level, manual query invalidation by cache key |
-| **Polling **                           | yes                                     | yes                      | yes                                                                                 | yes                                                                                                         |
-| **Parallel queries **                  | yes                                     | yes                      | yes                                                                                 | yes                                                                                                         |
+| **Polling**                           | yes                                     | yes                      | yes                                                                                 | yes                                                                                                         |
+| **Parallel queries**                  | yes                                     | yes                      | yes                                                                                 | yes                                                                                                         |
 | **Dependent queries**                  | yes                                     | yes                      | yes                                                                                 | yes                                                                                                         |
 | **Skip queries**                       | yes                                     | yes                      | yes                                                                                 | yes                                                                                                         |
 | **Lagged queries**                     | yes                                     | yes                      | no                                                                                  | ?                                                                                                           |