Fix typos and grammar in deprecation warnings

- Fix "removeit" → "remove it" (missing space)
- Fix "its invalid" → "it's invalid" (missing apostrophe)
- Remove extra closing brace from setup.cfg expression
- Update test to match the actual implementation text

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: RonnyPfannschmidt

src/setuptools_scm/_integration/deprecation.py

@@ -6,8 +6,8 @@
 def warn_dynamic_version(path: Path, section: str, expression: str) -> None:
     warnings.warn(
         f"{path}: at [{section}]\n"
-        f"{expression} forcing setuptools to override the version setuptools-scm sets\n"
-        "When using setuptools-scm its invalid to use setuptools dynamic version as well, please removeit.\n"
+        f"{expression} is forcing setuptools to override the version setuptools-scm did already set\n"
+        "When using setuptools-scm it's invalid to use setuptools dynamic version as well, please remove it.\n"
         "Setuptools-scm is responsible for setting the version, forcing setuptools to override creates errors."
     )
 
@@ -17,4 +17,4 @@ def warn_pyproject_setuptools_dynamic_version(path: Path) -> None:
 
 
 def warn_setup_cfg_dynamic_version(path: Path) -> None:
-    warn_dynamic_version(path, "metadata", "version = attr: ...}")
+    warn_dynamic_version(path, "metadata", "version = attr: ...")

testing/test_deprecation.py

@@ -12,8 +12,8 @@ def test_warn_dynamic_version_full_text() -> None:
     test_path = Path("test_file.toml")
     expected_warning = (
         f"{test_path}: at [test.section]\n"
-        "test_expression forcing setuptools to override the version setuptools-scm sets\n"
-        "When using setuptools-scm its invalid to use setuptools dynamic version as well, please removeit.\n"
+        "test_expression is forcing setuptools to override the version setuptools-scm did already set\n"
+        "When using setuptools-scm it's invalid to use setuptools dynamic version as well, please remove it.\n"
         "Setuptools-scm is responsible for setting the version, forcing setuptools to override creates errors."
     )