changelog: fix markdown formatting

- Convert entries into a list, otherwise Github merges lines into one
- Remove trailing whitespace

CHANGELOG.md

@@ -1,49 +1,51 @@
 # Change log for esp-sr
 
+## Unreleased
+
 ## 1.1.0
-Support esp32c3 for Chinese TTS  
-Update document of ESP-SR
-Add ESP-SR into Espressif component manager 
+- Support esp32c3 for Chinese TTS
+- Update document of ESP-SR
+- Add ESP-SR into Espressif component manager
 
 ## 1.0.0
-Add wakenet8 & wakenet9  
-Add multinet5 to support English and Chinese speech commond recognition
-Remove wakenet7 
-Add AFE pipeline for voice communication
+- Add wakenet8 & wakenet9
+- Add multinet5 to support English and Chinese speech command recognition
+- Remove wakenet7
+- Add AFE pipeline for voice communication
 
 ## 0.8.0
-support ESP32S3 chip
-add wakenet7 & update wakenet5 to support multi-channel detection
-remove wakenet6
-add AFE pipeline for speech recognition 
+- support ESP32S3 chip
+- add wakenet7 & update wakenet5 to support multi-channel detection
+- remove wakenet6
+- add AFE pipeline for speech recognition
 
 ## 0.7.0
-add chinese tts
-update noise suppression v2
-update AEC v3
+- add chinese tts
+- update noise suppression v2
+- update AEC v3
 
 ## 0.6.0
-update multinet_cn_1.4 and add CONTINUOUS RECOGNITION mode  
-improve hilexin wakeNet5X3 model(v5)    
-support IDFv4.0 build system  
-replace MAP algorithm with MASE(Mic Array Speech Enhancement) algorithm v1.0  
+- update multinet_cn_1.4 and add CONTINUOUS RECOGNITION mode
+- improve hilexin wakeNet5X3 model(v5)
+- support IDFv4.0 build system
+- replace MAP algorithm with MASE(Mic Array Speech Enhancement) algorithm v1.0
 
 ## 0.5.0
-add multinet1 English model v1.0  
-update multinet1 Chinese model v2.0  
-add Mic Array Processing(MAP) algorithm  
-Fix the bug of parsing speech command  
-fix the bug of decoder  
+- add multinet1 English model v1.0
+- update multinet1 Chinese model v2.0
+- add Mic Array Processing(MAP) algorithm
+- Fix the bug of parsing speech command
+- fix the bug of decoder
 
 ## 0.3.0
-add wakenet6  
-support cmake  
-add free wake word: hi jeson  
-update wakenet5X3 wake word model(v2)  
+- add wakenet6
+- support cmake
+- add free wake word: hi jeson
+- update wakenet5X3 wake word model(v2)
 
 ## 0.2.0
-add acoustic algorithm, include AEC, AGC, VAD ,NS  
-add wakenet5X2 and wakenet5X3  
+- add acoustic algorithm, include AEC, AGC, VAD ,NS
+- add wakenet5X2 and wakenet5X3
 
 ## 0.1.0
-Initial commit, include wakenet4,wakenet5 and multinet1_cni  
+- Initial commit, include wakenet4,wakenet5 and multinet1_cni