Merge pull request #190 from eseiler/docs/small

[DOC,FIX] prepare release

Author: smehringer

.github/ISSUE_TEMPLATE/release-checklist.md

@@ -87,7 +87,7 @@ Once again, the release message can be simply something along the lines of:
 ```
 This is the first release candidate for Sharg 1.0.0
 
-You can find a list of changes in our [changelog](https://github.com/seqan/sharg-parser/blob/1.0.0-rc.1/CHANGELOG.md).
+You can find a list of changes in our [changelog](https://github.com/seqan/sharg-parser/blob/1.0.0/CHANGELOG.md).
 ```
 
 Afterwards, bump the succeeding release candidate number in the `main`` branch: [include/sharg/version.hpp](https://github.com/seqan/sharg-parser/blob/1.0.0/include/sharg/version.hpp#L17-L22).

doc/setup/quickstart_cmake/index.md

@@ -117,6 +117,9 @@ cd tutorial
 mkdir build
 mkdir source
 git clone https://github.com/seqan/sharg-parser.git
+cd sharg-parser
+git submodule update --init
+cd ..
 ```
 
 The output of the command `tree -L 2` should now look like this:
@@ -133,6 +136,7 @@ The output of the command `tree -L 2` should now look like this:
 │   ├── build_system
 │   ├── doc
 │   ├── include
+│   ├── submodules
 │   └── test
 └── source