fix problems with unordered list linting

docs/commands/vmmap.md

@@ -12,11 +12,11 @@ and `heap` sections set as Read/Write/Execute.
 `vmmap` can accept multiple arguments, either patterns to match again mapping names, or addresses
 to determine which section it belongs to:
 
--  `-a` / `--addr`:
-  +  filter by address -> parses the next argument as an integer or asks gdb to interpret the value
--  `-n` / `--name`:
-  +  filter based on section name
--  If nothing is specified, it prints a warning and guesses the type
+1.  `-a` / `--addr`:
+    -  filter by address -> parses the next argument as an integer or asks gdb to interpret the value
+2.  `-n` / `--name`:
+    -  filter based on section name
+3.  If nothing is specified, it prints a warning and guesses the type
 
 ![vmmap-grep](https://github.com/hugsy/gef/assets/11377623/a3dbaa3e-88b0-407f-a0dd-07e65c4a3f73)