Fix typos in the help message

1. Several small typos are fixed.
2. The adjective "same" is always preceded by the article "the".
3. The word "etc." is always preceded by a comma.
4. The past participle of the verb "run" is "run" instead of "ran".
5. Add comma after an if clause.
6. Add space after a period and before another sentence.
7. Add space after a comma and before another word.

Author: MapleCCC

isort/main.py

@@ -207,8 +207,8 @@ def _build_arg_parser() -> argparse.ArgumentParser:
     )
     general_group.add_argument(
         "--overwrite-in-place",
-        help="Tells isort to overwrite in place using the same file handle."
-        "Comes at a performance and memory usage penalty over it's standard "
+        help="Tells isort to overwrite in place using the same file handle. "
+        "Comes at a performance and memory usage penalty over its standard "
         "approach but ensures all file flags and modes stay unchanged.",
         dest="overwrite_in_place",
         action="store_true",
@@ -223,7 +223,7 @@ def _build_arg_parser() -> argparse.ArgumentParser:
         "--show-files",
         dest="show_files",
         action="store_true",
-        help="See the files isort will be ran against with the current config options.",
+        help="See the files isort will be run against with the current config options.",
     )
     general_group.add_argument(
         "--df",
@@ -363,13 +363,13 @@ def _build_arg_parser() -> argparse.ArgumentParser:
         "--supported-extension",
         dest="supported_extensions",
         action="append",
-        help="Specifies what extensions isort can be ran against.",
+        help="Specifies what extensions isort can be run against.",
     )
     target_group.add_argument(
         "--blocked-extension",
         dest="blocked_extensions",
         action="append",
-        help="Specifies what extensions isort can never be ran against.",
+        help="Specifies what extensions isort can never be run against.",
     )
     target_group.add_argument(
         "--dont-follow-links",
@@ -386,7 +386,7 @@ def _build_arg_parser() -> argparse.ArgumentParser:
         "--allow-root",
         action="store_true",
         default=False,
-        help="Tells isort not to treat / specially, allowing it to be ran against the root dir.",
+        help="Tells isort not to treat / specially, allowing it to be run against the root dir.",
     )
 
     output_group.add_argument(
@@ -703,9 +703,9 @@ def _build_arg_parser() -> argparse.ArgumentParser:
         "--os",
         dest="only_sections",
         action="store_true",
-        help="Causes imports to be sorted based on their sections like STDLIB,THIRDPARTY etc. "
+        help="Causes imports to be sorted based on their sections like STDLIB, THIRDPARTY, etc. "
         "Within sections, the imports are ordered by their import style and the imports with "
-        "same style maintain their relative positions.",
+        "the same style maintain their relative positions.",
     )
     section_group.add_argument(
         "--ds",
@@ -805,7 +805,7 @@ def _build_arg_parser() -> argparse.ArgumentParser:
         help="Force isort to recognize a module as part of Python's internal future compatibility "
         "libraries. WARNING: this overrides the behavior of __future__ handling and therefore"
         " can result in code that can't execute. If you're looking to add dependencies such "
-        "as six a better option is to create a another section below --future using custom "
+        "as six, a better option is to create another section below --future using custom "
         "sections. See: https://github.com/PyCQA/isort#custom-sections-and-ordering and the "
         "discussion here: https://github.com/PyCQA/isort/issues/1463.",
     )