Update translations (#17953)

Add Bosnian as a language
Add Hindi changes.xliff, move from outdated markdown userguide to xliff.
Move Portuguese changes from markdown to xliff

Author: seanbudd

source/locale/bs/LC_MESSAGES/nvda.po

@@ -84,6 +84,7 @@ Please responsibly disclose security issues following NVDA's [security policy](h
 * Added commands to move the review cursor to the first and last character of the selected text, assigned to `NVDA+alt+home` and `NVDA+alt+end`, respectively. (#17299, @nvdaes)
 * Added a general setting to prevent the display turning off during say all or reading with braille.
 This option is enabled by default, but may result in increased battery depletion. (#17649, @LeonarddeR)
+* NVDA is now translated into Bosnian. (#17953)
 
 ### Changes
 

user_docs/bs/changes.xliff

@@ -58,7 +58,7 @@ Major highlights include:
 ### Internationalization {#Internationalization}
 
 It is important that people anywhere in the world, no matter what language they speak, get equal access to technology.
-Besides English, NVDA has been translated into 54 languages including: Afrikaans, Albanian, Amharic, Arabic, Aragonese, Bulgarian, Burmese, Catalan, Chinese (simplified and traditional), Croatian, Czech, Danish, Dutch, Farsi, Finnish, French, Galician, Georgian, German (Germany and Switzerland), Greek, Hebrew, Hindi, Hungarian, Icelandic, Irish, Italian, Japanese, Kannada, Korean, Kyrgyz, Lithuanian, Macedonian, Mongolian, Nepali, Norwegian, Polish, Portuguese (Brazil and Portugal), Punjabi, Romanian, Russian, Serbian, Slovak, Slovenian, Spanish (Colombia and Spain), Swedish, Tamil, Thai, Turkish, Ukrainian and Vietnamese.
+Besides English, NVDA has been translated into 55 languages including: Afrikaans, Albanian, Amharic, Arabic, Aragonese, Bosnian, Bulgarian, Burmese, Catalan, Chinese (simplified and traditional), Croatian, Czech, Danish, Dutch, Farsi, Finnish, French, Galician, Georgian, German (Germany and Switzerland), Greek, Hebrew, Hindi, Hungarian, Icelandic, Irish, Italian, Japanese, Kannada, Korean, Kyrgyz, Lithuanian, Macedonian, Mongolian, Nepali, Norwegian, Polish, Portuguese (Brazil and Portugal), Punjabi, Romanian, Russian, Serbian, Slovak, Slovenian, Spanish (Colombia and Spain), Swedish, Tamil, Thai, Turkish, Ukrainian and Vietnamese.
 
 ### Speech Synthesizer Support {#SpeechSynthesizerSupport}