Update README_traduction.md

README_traduction.md

 
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-### I have found a translation error, how do I fix it ?
+### I have found a translation error, how do I fix it ?
 
 **If the error is in any language other than english:**
 
 
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-### I have found an untranslated key in a language, how do I fix it ?
+### I have found an untranslated key in a language, how do I fix it ?
 
 It means you have found an english text even though you have selected another language.