fix tone, update readme (#2335)

examples/other/g2p/README.md

@@ -12,13 +12,13 @@ Run the command below to get the results of the test.
 ./run.sh
 ```
 
-The `avg WER` of g2p is: 0.024169315564825305
+The `avg WER` of g2p is: 0.024075726733983775
 
 ```text
      ,--------------------------------------------------------------------.
      |                         ./exp/g2p/text.g2p                         |
      |--------------------------------------------------------------------|
      | SPKR   | # Snt    # Wrd  | Corr    Sub    Del    Ins    Err  S.Err |
-     | Sum/Avg|  9996   299181  | 97.6    2.4    0.0    0.0    2.4   49.2 |
+     | Sum/Avg|  9996   299181  | 97.6    2.4    0.0    0.0    2.4   49.0 |
      `--------------------------------------------------------------------'
 ```

paddlespeech/t2s/frontend/tone_sandhi.py

@@ -84,9 +84,7 @@ class ToneSandhi():
             if j - 1 >= 0 and item == word[j - 1] and pos[0] in {"n", "v", "a"}:
                 finals[j] = finals[j][:-1] + "5"
         ge_idx = word.find("个")
-        if (len(word) > 1 and word[-1] in "吧呢啊呐噻嘛吖嗨呐哦哒滴哩哟喽啰耶喔诶") or (
-                len(word) > 1 and word[-2] in '好是帅酷棒衰烂臭狗糗' and
-                word[-1] == '额') or (len(word) == 1 and word[-1] in "额嗯"):
+        if len(word) >= 1 and word[-1] in "吧呢啊呐噻嘛吖嗨呐哦哒滴哩哟喽啰耶喔诶":
             finals[-1] = finals[-1][:-1] + "5"
         elif len(word) >= 1 and word[-1] in "的地得":
             finals[-1] = finals[-1][:-1] + "5"