correct links to project boards (Open-CMSIS-Pack#244)

## Fixes
<!-- List the issue(s) this PR resolves -->

## Changes
<!-- List the changes this PR introduces -->
correcting links to project boards for version 2.6.0 and 2.7.0 - they
were mixed up.

## Checklist
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checked before merging. -->

- [x] 🤖 This change is covered by unit tests as required.
- [x] 🤹 All required manual testing has been performed.
- [x] 🛡️ Security impacts have been considered.
- [x] 📖 All documentation updates are complete.
- [x] 🧠 This change does not change third-party dependencies

docs/index.md

@@ -37,8 +37,8 @@ Thank you for using the **CMSIS-Toolbox** that provides command-line tools for:
 
 Version            | Description
 :------------------|:-------------------------
-2.7.0              | CMSIS-Toolbox [2.7.0](https://github.com/Open-CMSIS-Pack/cmsis-toolbox/releases/tag/2.7.0). Adds [C++ language](YML-Input-Format.md#language-cpp): `c++23`, `gnu++23`; [output](YML-Input-Format.md#output) linker MAP file control; [MCUXpresso Config Tool](MCUXpressoConfig.md); [experimental features](Experimental-Features.md) for multi-project linker scripts, debug, and run. Fixed: `components:` now require [Csub](YML-Input-Format.md#component-name-conventions) specifier; LLVM/Clang 19 compatibility; handling of [group options](YML-Input-Format.md#groups). See here for [more details](https://github.com/orgs/Open-CMSIS-Pack/projects/13).
-2.6.0              | CMSIS-Toolbox [2.6.0](https://github.com/Open-CMSIS-Pack/cmsis-toolbox/releases/tag/2.6.0); extends [pack:](YML-Input-Format.md#pack-name-conventions) version specifier and [C language](YML-Input-Format.md#language-c) support to C17 and C23. Improved is [regions header file generation](CreateApplications.md#regions-header-file) for linker scripts. It adds [trustzone: secure-only](YML-Input-Format.md#processor) for projects without secure entries, [apis](YML-CBuild-Format.md#apis), [messages](YML-CBuild-Format.md#cbuilds), and [PLM status for config files](YML-CBuild-Format.md#files-of-a-component) to cbuild.yml information, and fixes several minor issues. It is no longer possible to specify [compiler](YML-Input-Format.md#compiler) in the [`cdefault.yml`](YML-Input-Format.md#cdefault) file.  See here for [more details](https://github.com/orgs/Open-CMSIS-Pack/projects/14).
+2.7.0              | CMSIS-Toolbox [2.7.0](https://github.com/Open-CMSIS-Pack/cmsis-toolbox/releases/tag/2.7.0). Adds [C++ language](YML-Input-Format.md#language-cpp): `c++23`, `gnu++23`; [output](YML-Input-Format.md#output) linker MAP file control; [MCUXpresso Config Tool](MCUXpressoConfig.md); [experimental features](Experimental-Features.md) for multi-project linker scripts, debug, and run. Fixed: `components:` now require [Csub](YML-Input-Format.md#component-name-conventions) specifier; LLVM/Clang 19 compatibility; handling of [group options](YML-Input-Format.md#groups). See here for [more details](https://github.com/orgs/Open-CMSIS-Pack/projects/14).
+2.6.0              | CMSIS-Toolbox [2.6.0](https://github.com/Open-CMSIS-Pack/cmsis-toolbox/releases/tag/2.6.0); extends [pack:](YML-Input-Format.md#pack-name-conventions) version specifier and [C language](YML-Input-Format.md#language-c) support to C17 and C23. Improved is [regions header file generation](CreateApplications.md#regions-header-file) for linker scripts. It adds [trustzone: secure-only](YML-Input-Format.md#processor) for projects without secure entries, [apis](YML-CBuild-Format.md#apis), [messages](YML-CBuild-Format.md#cbuilds), and [PLM status for config files](YML-CBuild-Format.md#files-of-a-component) to cbuild.yml information, and fixes several minor issues. It is no longer possible to specify [compiler](YML-Input-Format.md#compiler) in the [`cdefault.yml`](YML-Input-Format.md#cdefault) file.  See here for [more details](https://github.com/orgs/Open-CMSIS-Pack/projects/13).
 2.5.0              | CMSIS-Toolbox [2.5.0](https://github.com/Open-CMSIS-Pack/cmsis-toolbox/releases/tag/2.5.0); direct CMake interface is now default, [`tmpdir:`](YML-Input-Format.md#output-dirs) controls location of interim files, adds [`add-path-asm:`](YML-Input-Format.md#add-path-asm), adds [`define-asm`](YML-Input-Format.md#define-asm), adds [regular expression](YML-Input-Format.md#regular-expressions) search to `for-context:`/`not-for-context`, and contains several corrections.
 2.4.0              | CMSIS-Toolbox [2.4.0](https://github.com/Open-CMSIS-Pack/cmsis-toolbox/releases/tag/2.4.0); adds [CubeMX integration](CubeMX.md), [pre/post-build steps](YML-Input-Format.md#prepost-build-steps), simplifies the [generator integration](build-operation.md#generator-integration), and contains several corrections.
 2.3.0              | CMSIS-Toolbox [2.3.0](https://github.com/Open-CMSIS-Pack/cmsis-toolbox/releases/tag/2.3.0) adds in the csolution project files [component instances](YML-Input-Format.md#instances) and [optimize: debug](YML-Input-Format.md#optimize). Tools are extended with [cbuild setup command](build-operation.md#details-of-the-setup-mode), [--frozen-pack option](build-overview.md#reproducible-builds). Refer to [release information](https://github.com/Open-CMSIS-Pack/cmsis-toolbox/releases/tag/2.3.0) for more details.