Add missing TOC entries for Byte_Pool_Services (#7)

Author: ayedm1

rtos-docs/threadx/chapter4.adoc

@@ -32,6 +32,17 @@ The Threadx API functions available to the application are as follows.
 * <<tx_block_pool_prioritize,tx_block_pool_prioritize>>
 * <<tx_block_release,tx_block_release>>
 
+== Byte_Pool_Services
+
+* <<tx_byte_allocate,tx_byte_allocate>>
+* <<tx_byte_pool_create,tx_byte_pool_create>>
+* <<tx_byte_pool_delete,tx_byte_pool_delete>>
+* <<tx_byte_pool_info_get,tx_byte_pool_info_get>>
+* <<tx_byte_pool_performance_info_get,tx_byte_pool_performance_info_get>>
+* <<tx_byte_pool_performance_system_info_get,tx_byte_pool_performance_system_info_get>>
+* <<tx_byte_pool_prioritize,tx_byte_pool_prioritize>>
+* <<tx_byte_release,tx_byte_release>>
+
 == Event_Flags_Services
 
 * <<tx_event_flags_create,tx_event_flags_create>>