bpo-38438: Simplify argparse "star nargs" usage. (GH-17106)

diff --git a/Lib/pydoc_data/topics.py b/Lib/pydoc_data/topics.py
index 1fb19f2..d3559e4 100644
--- a/Lib/pydoc_data/topics.py
+++ b/Lib/pydoc_data/topics.py
@@ -3903,7 +3903,7 @@
              'is\n'
              '   first hit. The arguments are the same as for "break".\n'
              '\n'
-             'cl(ear) [filename:lineno | bpnumber [bpnumber ...]]\n'
+             'cl(ear) [filename:lineno | bpnumber ...]\n'
              '\n'
              '   With a *filename:lineno* argument, clear all the breakpoints '
              'at\n'
@@ -3913,7 +3913,7 @@
              'first\n'
              '   ask confirmation).\n'
              '\n'
-             'disable [bpnumber [bpnumber ...]]\n'
+             'disable [bpnumber ...]\n'
              '\n'
              '   Disable the breakpoints given as a space separated list of\n'
              '   breakpoint numbers.  Disabling a breakpoint means it cannot '
@@ -3922,7 +3922,7 @@
              'breakpoint, it\n'
              '   remains in the list of breakpoints and can be (re-)enabled.\n'
              '\n'
-             'enable [bpnumber [bpnumber ...]]\n'
+             'enable [bpnumber ...]\n'
              '\n'
              '   Enable the breakpoints specified.\n'
              '\n'