Docs, Starcraft 2: Add French documentation for setup and game page (#3031)

* Started to create the french doc

* First version of sc2 setup in french finish, created the file for the introduction of the game in french

* French-fy upgrade in setup, continue translation of game description

* Finish writing FR game page, added a link to it on the english game page. Re-read and corrected both the game page and setup page.

* Corrected a sentence in the SC2 English setup guide.

* Applied 120 carac limits for french part, applied modification for consistency.

* Added reference to website yaml checker, applied several wording correction/suggestions

* Modified link to AP page to be in relative (fr/en), uniformed SC2 and random writing (fr), applied some suggestons in writing quality(fr), added a mention to the datapackage (fr/en), enhanced prog balancing recommendation (fr)

* Correction of some grammar issues

* Removed name correction for english part since done in other PR; added mention to hotkey and language restriction

* Applied suggestions of peer review

* Applied mofications proposed by reviewer about the external website

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Co-authored-by: neocerber <neorcerber@gmail.com>

worlds/sc2/docs/en_Starcraft 2.md

@@ -1,5 +1,8 @@
 # Starcraft 2
 
+## Game page in other languages:
+* [Français](/games/Starcraft%202/info/fr)
+
 ## What does randomization do to this game?
 
 The following unlocks are randomized as items:
@@ -39,7 +42,7 @@ The goal is to beat the final mission in the mission order. The yaml configurati
 ## Which of my items can be in another player's world?
 
 By default, any of StarCraft 2's items (specified above) can be in another player's world. See the
-[Advanced YAML Guide](https://archipelago.gg/tutorial/Archipelago/advanced_settings/en)
+[Advanced YAML Guide](/tutorial/Archipelago/advanced_settings/en)
 for more information on how to change this.
 
 ## Unique Local Commands