Remove broken links from docs.

examples/basic/BLE_notify/main/main.cpp

@@ -138,7 +138,6 @@ void app_main(void) {
                       NIMBLE_PROPERTY::INDICATE
                     );
 
-  // https://www.bluetooth.com/specifications/gatt/viewer?attributeXmlFile=org.bluetooth.descriptor.gatt.client_characteristic_configuration.xml
   // Create a BLE Descriptor
   /***************************************************
    NOTE: DO NOT create a 2902 descriptor.

src/NimBLE2904.cpp

@@ -12,10 +12,6 @@
  *      Author: kolban
  */
 
-/*
- * See also:
- * https://www.bluetooth.com/specifications/gatt/viewer?attributeXmlFile=org.bluetooth.descriptor.gatt.characteristic_presentation_format.xml
- */
 #include "nimconfig.h"
 #if defined(CONFIG_BT_ENABLED) && defined(CONFIG_BT_NIMBLE_ROLE_PERIPHERAL)
 

src/NimBLE2904.h

@@ -33,9 +33,6 @@ struct BLE2904_Data {
  * @brief Descriptor for Characteristic Presentation Format.
  *
  * This is a convenience descriptor for the Characteristic Presentation Format which has a UUID of 0x2904.
- *
- * See also:
- * https://www.bluetooth.com/specifications/gatt/viewer?attributeXmlFile=org.bluetooth.descriptor.gatt.characteristic_presentation_format.xml
  */
 class NimBLE2904: public NimBLEDescriptor {
 public:

src/NimBLEAdvertising.cpp

@@ -112,8 +112,6 @@ void NimBLEAdvertising::removeServiceUUID(const NimBLEUUID &serviceUUID) {
 
 /**
  * @brief Set the device appearance in the advertising data.
- * The codes for distinct appearances can be found here:\n
- * https://www.bluetooth.com/specifications/gatt/viewer?attributeXmlFile=org.bluetooth.characteristic.gap.appearance.xml.
  * @param [in] appearance The appearance of the device in the advertising data.
  */
 void NimBLEAdvertising::setAppearance(uint16_t appearance) {
@@ -800,9 +798,6 @@ void NimBLEAdvertisementData::addData(char * data, size_t length) {
 /**
  * @brief Set the appearance.
  * @param [in] appearance The appearance code value.
- *
- * See also:
- * https://www.bluetooth.com/specifications/gatt/viewer?attributeXmlFile=org.bluetooth.characteristic.gap.appearance.xml
  */
 void NimBLEAdvertisementData::setAppearance(uint16_t appearance) {
     char cdata[2];

src/NimBLEExtAdvertising.cpp

@@ -623,9 +623,6 @@ void NimBLEExtAdvertisement::addData(const uint8_t * data, size_t length) {
 /**
  * @brief Set the appearance.
  * @param [in] appearance The appearance code value.
- *
- * See also:
- * https://www.bluetooth.com/specifications/gatt/viewer?attributeXmlFile=org.bluetooth.characteristic.gap.appearance.xml
  */
 void NimBLEExtAdvertisement::setAppearance(uint16_t appearance) {
     char cdata[2];