Update README.md

README.md

@@ -50,7 +50,7 @@ A gym for training code agents resolve real-world software issues. This version
 | `repo` | `str` | `owner/repo` |
 | `patch` | `str` | Source-code diff that resolves the issue *(tests omitted)* |
 | `test_patch` | `str` | Diff of test files added/changed by the issue resolving commit  |
-| `base_commit` | `str` | Commit hash **before** the issue resolution |
+| `base_commit` | `str` | Commit hash *before* the issue resolution |
 | `environment_setup_commit` | `str` | Commit hash of the resolved version, from which the environment was built |
 | `created_at` | `str` | ISO timestamp of the issue resolving commit |
 | `problem_statement` | `str` | Issue title + body |