Improve doc strings

.github/workflows/scripts/build.py

@@ -143,6 +143,15 @@ def query_build_variable(project:Path, variable:str) -> list:
  affects ME14). This is difficult because example projects do not have direct visibility 
  into library SRCS/VPATH for libraries that build a static file.
 
+The format of the dependency map a dictionary:
+ dependency_map[TARGET] = [DEPENDENCIES]
+
+ where TARGET is the target micro's part number (ex: MAX78000)
+ and DEPENDENCIES is a list of absolute paths as strings (ex: ['/home/jhcarter/repos/msdk/Examples/MAX32690/ADC', 
+ '/home/jhcarter/repos/msdk/Examples/MAX32690/ADC/board.c', 
+ '/home/jhcarter/repos/msdk/Examples/MAX32690/ADC/heap.c',
+ ...])
+ the paths may be a file or a folder.
 """
 def create_dependency_map(maxim_path:Path, targets:list) -> dict:
  dependency_map = dict()
@@ -195,6 +204,9 @@ def create_dependency_map(maxim_path:Path, targets:list) -> dict:
 
  return dependency_map
 
+"""
+Return a list of target microcontrollers that are affected by a change to the specified file.
+"""
 def get_affected_targets(dependency_map: dict, file: Path) -> list:
  file = Path(file)
  affected = []