Fix tsv and csv

crates/nu-command/src/formats/from/delimited.rs

@@ -39,7 +39,7 @@ fn from_delimited_stream(
         .from_reader(input_reader);
 
     let headers = if noheaders {
-        (1..=reader
+        (0..reader
             .headers()
             .map_err(|err| from_csv_error(err, span))?
             .len())

crates/nu-command/tests/format_conversions/csv.rs

@@ -284,7 +284,7 @@ fn from_csv_text_skipping_headers_to_table() {
             r#"
                 open los_tres_amigos.txt
                 | from csv --noheaders
-                | get column3
+                | get column2
                 | length
             "#
         ));

crates/nu-command/tests/format_conversions/tsv.rs

@@ -207,7 +207,7 @@ fn from_tsv_text_skipping_headers_to_table() {
             r#"
                 open los_tres_amigos.txt
                 | from tsv --noheaders
-                | get column3
+                | get column2
                 | length
             "#
         ));