Merge pull request #234186 from sally-baolian/patch-111

Update x-sampa.md

Author: prmerger-automator[bot]

articles/cognitive-services/Speech-Service/includes/phonetic-sets/text-to-speech/x-sampa.md

@@ -1,5 +1,7 @@
 The table below shows a mapping relationship between X-SAMPA (Extended Speech Assessment Methods Phonetic Alphabet) and IPA alphabets. The X-SAMPA symbols are shown at left, with the corresponding IPA symbols to the right.
 
+When using X-SAMPA phone symbols `'` and `"`, it’s important to avoid conflicts with the wrapper symbol. If the X-SAMPA string contains phone `'`, we recommend using phone `_j` instead. If you don’t want to replace the phone `'`, you need to use double quotes `"` as a wrapper. Similarly, if the X-SAMPA string contains phone `"`, then double quotes shouldn't be used as a wrapper, and you must use the single quote `'` as a wrapper. Otherwise, it will cause an error.
+
 ```txt
 x-sampa (L)  ipa (R)
 a	           a