fix case on dbt references (#317)

## Description

In this PR dbt is updated to consistently be all lower-case except in
functionally required places for it to be capitalized in some way.

## Related Issue(s)
closes #306 

## Breaking Change?

No

## Checklist

- [x] I have made corresponding changes to the documentation (if
required)
- [x] I have added tests that prove my fix is effective or that my
feature works

cosmos/providers/dbt/core/utils/warn_parsing.py

@@ -7,7 +7,7 @@
 
 def parse_output(result: SubprocessResult, keyword: str) -> int:
     """
-    Parses the DBT test output message and returns the number of errors or warnings.
+    Parses the dbt test output message and returns the number of errors or warnings.
 
     :param result: String containing the output to be parsed.
     :param keyword: String representing the keyword to search for in the output (WARN, ERROR).
@@ -35,10 +35,10 @@ def extract_log_issues(log_list: List[str]) -> Tuple[List[str], List[str]]:
     """
     Extracts warning messages from the log list and returns them as a formatted string.
 
-    This function searches for warning messages in DBT test. It reverses the log list for performance
+    This function searches for warning messages in dbt test. It reverses the log list for performance
     improvement. It extracts and formats the relevant information and appends it to a list of warnings.
 
-    :param log_list: List of strings, where each string is a log line from DBT test.
+    :param log_list: List of strings, where each string is a log line from dbt test.
     :return: two lists of strings, the first one containing the test names and the second one
         containing the test results.
     """

cosmos/providers/dbt/parser/project.py

@@ -18,7 +18,7 @@
 
 class DbtModelType(Enum):
     """
-    Represents type of DBT unit (model, snapshot, seed)
+    Represents type of dbt unit (model, snapshot, seed)
     """
 
     DBT_MODEL = 1

cosmos/providers/dbt/render.py

@@ -182,7 +182,7 @@ def render_project(
             )
         else:
             # TODO: coverme
-            logger.error("Unknown DBT type.")
+            logger.error("Unknown dbt type.")
             continue
 
         # if test_behavior isn't "after_each", we can just add the task to the

docs/dbt/execution-modes.rst

@@ -83,7 +83,7 @@ In this case, users are responsible for declaring which version of ``dbt`` they
 Similar to the ``local`` execution mode, Cosmos converts Airflow Connections into a way ``dbt`` understands them by creating
 a ``dbt`` profile file (``profiles.yml``).
 
-A drawback with this approach is that it is slower than ``local`` because it creates a new Python virtual environment for each Cosmos Dbt task run.
+A drawback with this approach is that it is slower than ``local`` because it creates a new Python virtual environment for each Cosmos dbt task run.
 
 Example of how to use: