fix GCC version in docs

Signed-off-by: Martijn Govers <[email protected]>

Author: mgovers

docs/advanced_documentation/build-guide.md

@@ -42,8 +42,8 @@ You need a C++ compiler with C++20 support. Below is a list of tested compilers:
 **Linux**
 
 * gcc >= 11.0
-  * Version 11.2 tested using the version in the `manylinux_2_28` container.
-  * Version 12.2 tested using the musllinux build with custom compiler
+  * Version 12.x tested using the version in the `manylinux_2_28` container.
+  * Version 12.x tested using the musllinux build with custom compiler
   * Version 11.x tested in CI
 * Clang >= 14.0
   * Version 14.x tested in CI