fix(Documentation): Add explicit UTF-8 encoding to build.py

Add encoding parameter to source_file.read_text() call for consistency with other file reads in the same script and to prevent potential encoding issues on different platforms.

Co-authored-by: Tahsin Türker Mutlugün <Tahsin.Mutlugun@analog.com>

Author: carolinemaymaguirecmm

Documentation/build.py

@@ -30,7 +30,7 @@ def parse_example_info(source_file: Path) -> ExampleInfo:
     example_details = "No details"
     example_description = "No description"
     expr = re.compile(r"(@brief|@details)\s+([\s\S]*?)(?=\n\s*\*\s*@|\n\s*\*)")
-    for match in expr.finditer(source_file.read_text()):
+    for match in expr.finditer(source_file.read_text(encoding="utf-8")):
         tag, value = match.groups()
         match tag:
             case "@brief":