Fix minor issues with previous room version stuff

content/rooms/fragments/v1-deprecated-formatting-off-spec.md

@@ -1,3 +1,7 @@
+---
+toc_hide: true
+---
+
 Events sent into rooms of this version can have formats which are different
 from their normal schema. Those cases are documented here.
 

content/rooms/fragments/v1-stringy-power-levels.md

@@ -1,3 +1,7 @@
+---
+toc_hide: true
+---
+
 ##### Power levels accepted as strings
 
 In order to maintain backwards compatibility with early implementations,

content/rooms/v7.md

@@ -1,7 +1,7 @@
 ---
 title: Room Version 7
 type: docs
-weight: 60
+weight: 70
 ---
 
 This room version builds on [version 6](/rooms/v6) to introduce knocking

content/rooms/v8.md

@@ -1,7 +1,7 @@
 ---
 title: Room Version 8
 type: docs
-weight: 60
+weight: 80
 ---
 
 This room version builds on [version 7](/rooms/v7) to introduce a new

content/rooms/v9.md

@@ -1,7 +1,7 @@
 ---
 title: Room Version 9
 type: docs
-weight: 60
+weight: 90
 ---
 
 This room version builds on [version 8](/rooms/v8) to add additional redaction