[PATCH] Update deprecated option in Wget documentation

[chiang jinfu]

Hello Wget maintainers,

Since Wget 1.12 renames '--html-extension' to '--adjust-extension', it is 
better to update the usage in the documentation.  I've attached a patch to 
update the deprecated option '--html-extension' to its new name 
'--adjust-extension' in the Examples chapter. Please review and let me know if 
any additional changes are necessary.

Thanks
Jinfu

0001-Update-deprecated-option-html-extension-to-adjust-ex.patch
Description: 0001-Update-deprecated-option-html-extension-to-adjust-ex.patch