Fix #4269 - Removes empty/special characters (#4270)

* Remove ufeff

* Remove u2064

* Remove u2062

* Replace u202f followed by : with  :

* Replace u202f next to « or » with   and « or »

* Replace u202f followed by ; with  ;

* Replace u202f followed by ! with  

* Replace u202f followed by ? with  ?

* Replace remaining u202f with classical space

* Replace u200b surrounded by space  with classical space

* Replace u200b surrounded by space  with classical space - again (repeated)

* Remove remaining u200b

* Remove u200a

* Replace u2009 with  

* Remove u00ad

* Replace u00a0 followed by : ! or ? with   and punctuation

* Replace u00a0 surrounded « or » with   and punctuation

* Replace u00a0 followed by whitespaces

* Replace u00a0 preceded by whitespaces

* Replace u00a0 followed by a newline with a newline

* Replace u00a0 followed by a newline with a newline - Take2

* Replace u00a0 followed by a ;   and punctuation

* Remove u00a0 followed by ,

* Remove u00a0 in indentation spaces with \n([ ]*)([\u00a0])([ ]*)

* Manual replacement of ([\u00a0])([ ]+)

* Replace remaining ([\u00a0]+) by a space

* cleaning empty elements

* remove ufe0f

* Remove u00a0 and u202f after merging against updated main

* remove double whitespace using (\w)(  )(\w)

1 files changed, 1 insertions, 1 deletions

diff --git a/files/fr/web/api/fetch_api/basic_concepts/index.md b/files/fr/web/api/fetch_api/basic_concepts/index.md
index 83cc79609d..120995ff3a 100644
--- a/files/fr/web/api/fetch_api/basic_concepts/index.md
+++ b/files/fr/web/api/fetch_api/basic_concepts/index.md
@@ -61,7 +61,7 @@ When a new {{domxref("Headers")}} object is created using the {{domxref("Headers
   </tbody>
 </table>
 
-A header's guard affects the {{domxref("Headers.set","set()")}}, {{domxref("Headers.delete","delete()")}}, and {{domxref("Headers.append","append()")}} methods which change the header's contents. A `TypeError` is thrown if you try to modify a {{domxref("Headers")}} object whose guard is `immutable`. However, the operation will work if
+A header's guard affects the {{domxref("Headers.set","set()")}}, {{domxref("Headers.delete","delete()")}}, and {{domxref("Headers.append","append()")}} methods which change the header's contents. A `TypeError` is thrown if you try to modify a {{domxref("Headers")}} object whose guard is `immutable`. However, the operation will work if
 
 - guard is `request` and the header _name_ isn't a {{Glossary("forbidden header name")}} .
 - guard is `request-no-cors` and the header _name_/_value_ is a {{Glossary("simple header")}} .