Tweak toolchain subcommand help text

Author: djc

src/cli/rustup_mode.rs

@@ -125,7 +125,7 @@ enum RustupSubcmd {
     #[command(hide = true)]
     DumpTestament,
 
-    /// Modify or query the installed toolchains
+    /// Install, uninstall, or list toolchains
     Toolchain {
         #[command(subcommand)]
         subcmd: ToolchainSubcmd,

tests/suite/cli-ui/rustup/rustup_help_cmd_stdout.toml

@@ -9,7 +9,7 @@ The Rust toolchain installer
 Usage: rustup[EXE] [OPTIONS] [+toolchain] [COMMAND]
 
 Commands:
-  toolchain    Modify or query the installed toolchains
+  toolchain    Install, uninstall, or list toolchains
   default      Set the default toolchain
   show         Show the active and installed toolchains or profiles
   update       Update Rust toolchains and rustup

tests/suite/cli-ui/rustup/rustup_help_flag_stdout.toml

@@ -9,7 +9,7 @@ The Rust toolchain installer
 Usage: rustup[EXE] [OPTIONS] [+toolchain] [COMMAND]
 
 Commands:
-  toolchain    Modify or query the installed toolchains
+  toolchain    Install, uninstall, or list toolchains
   default      Set the default toolchain
   show         Show the active and installed toolchains or profiles
   update       Update Rust toolchains and rustup

tests/suite/cli-ui/rustup/rustup_only_options_stdout.toml

@@ -9,7 +9,7 @@ The Rust toolchain installer
 Usage: rustup[EXE] [OPTIONS] [+toolchain] [COMMAND]
 
 Commands:
-  toolchain    Modify or query the installed toolchains
+  toolchain    Install, uninstall, or list toolchains
   default      Set the default toolchain
   show         Show the active and installed toolchains or profiles
   update       Update Rust toolchains and rustup

tests/suite/cli-ui/rustup/rustup_toolchain_cmd_help_flag_stdout.toml

@@ -2,7 +2,7 @@ bin.name = "rustup"
 args = ["toolchain", "--help"]
 stdout = """
 ...
-Modify or query the installed toolchains
+Install, uninstall, or list toolchains
 
 Usage: rustup[EXE] toolchain <COMMAND>