[clang-tidy] align all help message in run-clang-tidy

clang-tools-extra/clang-tidy/tool/run-clang-tidy.py

@@ -261,20 +261,20 @@ def main():
     parser.add_argument(
         "-allow-enabling-alpha-checkers",
         action="store_true",
-        help="allow alpha checkers from clang-analyzer.",
+        help="Allow alpha checkers from clang-analyzer.",
     )
     parser.add_argument(
-        "-clang-tidy-binary", metavar="PATH", help="path to clang-tidy binary"
+        "-clang-tidy-binary", metavar="PATH", help="Path to clang-tidy binary."
     )
     parser.add_argument(
         "-clang-apply-replacements-binary",
         metavar="PATH",
-        help="path to clang-apply-replacements binary",
+        help="Path to clang-apply-replacements binary.",
     )
     parser.add_argument(
         "-checks",
         default=None,
-        help="checks filter, when not specified, use clang-tidy default",
+        help="Checks filter, when not specified, use clang-tidy default.",
     )
     config_group = parser.add_mutually_exclusive_group()
     config_group.add_argument(
@@ -307,7 +307,7 @@ def main():
     parser.add_argument(
         "-header-filter",
         default=None,
-        help="regular expression matching the names of the "
+        help="Regular expression matching the names of the "
         "headers to output diagnostics from. Diagnostics from "
         "the main file of each translation unit are always "
         "displayed.",
@@ -347,19 +347,22 @@ def main():
         "-j",
         type=int,
         default=0,
-        help="number of tidy instances to be run in parallel.",
+        help="Number of tidy instances to be run in parallel.",
     )
     parser.add_argument(
-        "files", nargs="*", default=[".*"], help="files to be processed (regex on path)"
+        "files",
+        nargs="*",
+        default=[".*"],
+        help="Files to be processed (regex on path).",
     )
-    parser.add_argument("-fix", action="store_true", help="apply fix-its")
+    parser.add_argument("-fix", action="store_true", help="apply fix-its.")
     parser.add_argument(
-        "-format", action="store_true", help="Reformat code after applying fixes"
+        "-format", action="store_true", help="Reformat code after applying fixes."
     )
     parser.add_argument(
         "-style",
         default="file",
-        help="The style of reformat code after applying fixes",
+        help="The style of reformat code after applying fixes.",
     )
     parser.add_argument(
         "-use-color",
@@ -388,7 +391,7 @@ def main():
         help="Additional argument to prepend to the compiler command line.",
     )
     parser.add_argument(
-        "-quiet", action="store_true", help="Run clang-tidy in quiet mode"
+        "-quiet", action="store_true", help="Run clang-tidy in quiet mode."
     )
     parser.add_argument(
         "-load",
@@ -400,7 +403,7 @@ def main():
     parser.add_argument(
         "-warnings-as-errors",
         default=None,
-        help="Upgrades warnings to errors. Same format as '-checks'",
+        help="Upgrades warnings to errors. Same format as '-checks'.",
     )
     args = parser.parse_args()