remove one redundancy line

Author: mudongliang

README.md

@@ -268,7 +268,7 @@ mkdir empty && rsync -r --delete empty/ some-dir && rmdir some-dir
 
 - The standard tools for patching source code are `diff` and `patch`. See also `diffstat` for summary statistics of a diff and `sdiff` for a side-by-side diff. Note `diff -r` works for entire directories. Use `diff -r tree1 tree2 | diffstat` for a summary of changes. Use `vimdiff` to compare and edit files.
 
-- For binary files, use `hd`, `hexdump` or `xxd` for simple hex dumps and `bvi` or `biew` for binary editing.
+- For binary files, use `hd`, `hexdump` or `xxd` for simple hex dumps and `bvi`, `hexedit` or `biew` for binary editing.
 
 - Also for binary files, `strings` (plus `grep`, etc.) lets you find bits of text.
 
@@ -452,8 +452,6 @@ A few examples of piecing together commands:
 
 - `pv`: monitor the progress of data through a pipe
 
-- `hd`, `hexdump`, `xxd`, `biew` and `bvi`: dump or edit binary files
-
 - `strings`: extract text from binary files
 
 - `tr`: character translation or manipulation