fix broken external links

docs/openms-applications-and-tools/installation/installation-with-conda.md

@@ -8,7 +8,7 @@ for use in for example one of our tutorials, please refer to a different install
 You can use conda or mamba to install the OpenMS library and tools without user interface. Depending on the conda channel, you can
 obtain release versions (`bioconda` channel) and nightly versions (`openms` channel).
 
-1. Follow the instructions to install [conda](https://docs.conda.io/projects/conda/en/latest/user-guide/install/linux.html) or [mamba](https://mamba.readthedocs.io/en/latest/installation.html).
+1. Follow the instructions to install [conda](https://docs.conda.io/projects/conda/en/latest/user-guide/install/linux.html) or [mamba](https://mamba.readthedocs.io/en/latest/installation/mamba-installation.html).
   In the following, every mention of conda may be substituted by mamba for faster environment solving.
 
 2. We recommend to create a new environment with one of the supported python version versions:

docs/quick-reference/developer-faq.md

@@ -206,7 +206,7 @@ its own subproject. The same is true for the `TOPP` classes.
 
 ### I'm getting the error "Error C2471: cannot update program database"
 
-This is a bug in Visual Studio and there is a [bug fix](http://code.msdn.microsoft.com/KB946040) Only apply it if you
+This is a bug in Visual Studio and there is a [bug fix](https://support.microsoft.com/en-us/topic/fix-error-message-when-you-compile-a-visual-c-2008-project-error-c2471-cannot-update-program-database-339dde4f-904c-6dfa-51cd-090674ece765) Only apply it if you
 encounter the error. The bug fix might have unwanted side effects!
 
 ### Visual Studio can't read the clang-format file.