presets: Fix command help for --presets-file

Amends commit 95edd93948 (presets: Support loading from arbitrary file,
2026-03-18).

Source/cmakemain.cxx

@@ -1049,7 +1049,7 @@ int do_workflow(int ac, char const* const* av)
       "Usage: cmake --workflow <options>\n"
       "Options:\n"
       "  --preset <preset>     = Workflow preset to execute.\n"
-      "  --presets-file <file>  = Path to a presets file.\n"
+      "  --presets-file <file> = Path to a presets file.\n"
       "  --list-presets        = List available workflow presets.\n"
       "  --fresh               = Configure a fresh build tree, removing any "
                                 "existing cache file.\n"

Source/ctest.cxx

@@ -29,6 +29,8 @@ cmDocumentationEntry const cmDocumentationUsage = { {}, "  ctest [options]" };
 cmDocumentationEntry const cmDocumentationOptions[] = {
   { "--preset <preset>, --preset=<preset>",
     "Read arguments from a test preset." },
+  { "--presets-file <file>, --presets-file=<file>",
+    "Load test presets from the given file." },
   { "--list-presets", "List available test presets." },
   { "-C <cfg>, --build-config <cfg>", "Choose configuration to test." },
   { "--progress", "Enable short progress output from tests." },

Tests/RunCMake/CMakePresetsWorkflow/InvalidOption-stderr.txt

@@ -2,6 +2,6 @@
 Usage: cmake --workflow <options>
 Options:
   --preset <preset>     = Workflow preset to execute\.
-  --presets-file <file>  = Path to a presets file\.
+  --presets-file <file> = Path to a presets file\.
   --list-presets        = List available workflow presets\.
   --fresh               = Configure a fresh build tree, removing any existing cache file\.$