tools/power: Fix typo in man page

From context, we mean EPB (Enegry Performance Bias).
Signed-off-by: NMatt Lupfer <mlupfer@ddn.com>
Signed-off-by: NLen Brown <len.brown@intel.com>

tools/power/x86/x86_energy_perf_policy/x86_energy_perf_policy.8

@@ -40,7 +40,7 @@ in the same processor package.
 Hardware P-States (HWP) are effectively an expansion of hardware
 P-state control from the opportunistic turbo-mode P-state range
 to include the entire range of available P-states.
-On Broadwell Xeon, the initial HWP implementation, EBP influenced HWP.
+On Broadwell Xeon, the initial HWP implementation, EPB influenced HWP.
 That influence was removed in subsequent generations,
 where it was moved to the
 Energy_Performance_Preference (EPP) field in