Fix typos in comments (#12052)

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Fix typos in comments

# User-Facing Changes
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Signed-off-by: geekvest <cuimoman@sohu.com>

crates/nu-parser/src/parse_keywords.rs

@@ -3906,7 +3906,7 @@ fn detect_params_in_name(
     }
 }
 
-/// Run has_flag_const and and push possible error to working_set
+/// Run has_flag_const and push possible error to working_set
 fn has_flag_const(working_set: &mut StateWorkingSet, call: &Call, name: &str) -> Result<bool, ()> {
     call.has_flag_const(working_set, name).map_err(|err| {
         working_set.error(err.wrap(working_set, call.span()));

crates/nu-path/src/dots.rs

@@ -77,7 +77,7 @@ pub fn expand_ndots(path: impl AsRef<Path>) -> PathBuf {
                     dots_count = 0;
                 } else {
                     // if at a path component boundary a secment consists of not only dots
-                    // don't expand the dots and only append the the appropriate number of .
+                    // don't expand the dots and only append the appropriate number of .
                     while dots_count > 0 {
                         expanded.push('.');
                         dots_count -= 1;