docs: Add a french translation style guide.

docs/french.md

@@ -0,0 +1,20 @@
+# French translation style guide
+
+## Rules
+
+* Use of *vous* instead of *tu*,
+* A space before and after a colon and a semi-colon,
+* Prefer the infinitive form of a verb: *Save* into *Sauver* (instead of *Sauvez*).
+
+Some translations can be tricky, so please don't hesitate to ask the community or contribute to this guide.
+
+## Terms
+
+* stream - **canal**
+* topic - **sujet**
+* edit - **modifier**
+* email - **courriel**
+* upload - **envoyer**
+* bot - **robot**
+* alert word - **mot alerte**
+* emoji - **emoji**

docs/translating.md

@@ -28,6 +28,7 @@ giving guidance on how Zulip should be translated into specific
 languages (e.g. what word to translate words like "home" to):
 
 * [Chinese](chinese.html)
+* [French](french.html)
 * [German](german.html)
 * [Polish](polish.html)
 * [Russian](russian.html)