Tidy up release candidate documentation

Author: mpilgrem

.github/ISSUE_TEMPLATE/question.md

@@ -3,14 +3,20 @@ name: Question
 about: Ask a question about Stack usage
 ---
 
-Do you have a question regarding stack's usage that isn't covered by [the docs](http://haskellstack.org)?
-In that case please ask your question on [Stack Overflow](http://stackoverflow.com) and use [the haskell-stack tag](http://stackoverflow.com/questions/tagged/haskell-stack).
-This way your question will be more easily discoverable by other people with the same question.
+Do you have a question regarding Stack's usage that isn't covered by
+[the docs](http://haskellstack.org)? In that case please ask your question on
+[Stack Overflow](http://stackoverflow.com) and use
+[the haskell-stack tag](http://stackoverflow.com/questions/tagged/haskell-stack).
+This way your question will be more easily discoverable by other people with the
+same question.
 
-Question related to stack project templates? Please report it at the [stack-templates](https://github.com/commercialhaskell/stack-templates) repository instead.
+Question related to Stack project templates? Please report it at the
+[stack-templates](https://github.com/commercialhaskell/stack-templates) repository instead.
 
-if you still want to ask the question here instead, please make sure that you are using the latest release (current stack-2.1.1).
-See the [upgrade instructions](http://docs.haskellstack.org/en/stable/install_and_upgrade/#upgrade) to upgrade.
+If you still want to ask the question here instead, please make sure that you
+are using the latest release (current stack-2.7.5). See the
+[upgrade instructions](http://docs.haskellstack.org/en/stable/install_and_upgrade/#upgrade)
+to upgrade.
 
 ### Stack version
 

CONTRIBUTING.md

@@ -135,7 +135,7 @@ documentation, please submit a
 changes/additions based off the
 [stable branch](https://github.com/commercialhaskell/stack/tree/stable).
 
-The specific versions of the online documentation (eg `v: v2.7.5`) are generated
+The specific versions of the online documentation (eg `v: v2.9.1`) are generated
 from the content of files at the point in the responsitory's history specified
 by the corresponding release tag. Consequently, that content is fixed once
 released.

doc/GUIDE_advanced.md

@@ -13,7 +13,7 @@ output (e.g. `0.35.0`) and quit.
 
 ## The `stack --numeric-version` flag
 
-Stack will report its numeric version to standard output (e.g. `2.7.5`) and
+Stack will report its numeric version to standard output (e.g. `2.9.1`) and
 quit.
 
 ## The `stack --[no-]rsl-in-log` flag

doc/yaml_configuration.md

@@ -1105,7 +1105,7 @@ setup-info:
 
 'Platforms' are pairs of an operating system and a machine architecture (for
 example, 32-bit i386 or 64-bit x86-64) (represented by the
-`Cabal.Distribution.Systems.Platform` type). Stack currently (version 2.7.5)
+`Cabal.Distribution.Systems.Platform` type). Stack currently (version 2.9.1)
 supports the following pairs in the format of the `setup-info` key:
 
 |Operating system|I386 arch|X86_64 arch|Other machine architectures                                 |