Update and rename 2021-07-07-Lang-team-july-update.md to 2021-07-12-Lang-team-july-update.md

Author: nikomatsakis

posts/inside-rust/inside-rust/2021-07-07-Lang-team-july-update.md renamed to posts/inside-rust/inside-rust/2021-07-12-Lang-team-july-update.md

@@ -6,7 +6,7 @@ description: "Lang team July update"
 team: the lang team <https://lang-team.rust-lang.org/>
 ---
 
-Today the lang team held its July planning meeting ([minutes]). These meetings are tyically held the first Wednesday of every month.
+On 2021-07-07, the lang team held its July planning meeting ([minutes]). These meetings are tyically held the first Wednesday of every month.
 
 The planning meeting is used for: