[llvm] [llvm-objcopy] Add --remove-symbol-prefix (PR #79415)

[James Henderson via llvm-commits]

================
@@ -117,6 +117,11 @@ multiple file formats.
  If specified, symbol and section names specified by other switches are treated
  as extended POSIX regular expression patterns.
 
+.. option:: --remove-symbol-prefix <prefix>
+
+Remove <prefix> from the start of every symbol name. No-op for symbols that do
+not start with <prefix>.
----------------
jh7370 wrote:

```suggestion
Remove ``<prefix>`` from the start of every symbol name. No-op for symbols that do
not start with ``<prefix>``.
```
Use the same formatting as the other options in this doc.

https://github.com/llvm/llvm-project/pull/79415