Update trim_.rs (#8201)

fix typo in help messages


# Description

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# User-Facing Changes

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# Tests + Formatting

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fmt --all` applies these changes)
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clippy::needless_collect` to check that you're using the standard code
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# After Submitting

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---------

Co-authored-by: Reilly Wood <reilly.wood@icloud.com>

crates/nu-command/src/strings/str_/trim/trim_.rs

@@ -44,7 +44,8 @@ impl Command for SubCommand {
             .rest(
                 "rest",
                 SyntaxShape::CellPath,
-                "For a data structure input, trim strings at the given cell paths",            )
+                "For a data structure input, trim strings at the given cell paths",
+            )
             .named(
                 "char",
                 SyntaxShape::String,
@@ -53,21 +54,29 @@ impl Command for SubCommand {
             )
             .switch(
                 "left",
-                "trims characters only from the beginning of the string (default: whitespace)",
+                "trims characters only from the beginning of the string",
                 Some('l'),
             )
             .switch(
                 "right",
-                "trims characters only from the end of the string (default: whitespace)",
+                "trims characters only from the end of the string",
                 Some('r'),
             )
             .switch(
                 "all",
-                "trims all characters from both sides of the string *and* in the middle (default: whitespace)",
+                "trims all characters from both sides of the string *and* in the middle",
                 Some('a'),
             )
-            .switch("both", "trims all characters from left and right side of the string (default: whitespace)", Some('b'))
+            .switch(
-            .switch("format", "trims spaces replacing multiple characters with singles in the middle (default: whitespace)", Some('f'))
+                "both",
+                "trims all characters from left and right side of the string",
+                Some('b'),
+            )
+            .switch(
+                "format",
+                "trims spaces replacing multiple characters with singles in the middle",
+                Some('f'),
+            )
     }
     fn usage(&self) -> &str {
         "Trim whitespace or specific character"