Chore: Update titles and broken links in documentation

Author: amotl

docs/crud.rst

@@ -1,8 +1,8 @@
 .. _crud:
 
-====================================
-Create, retrieve, update, and delete
-====================================
+===============
+CRUD Operations
+===============
 
 This section of the documentation shows how to query, insert, update and delete
 records using CrateDB's SQLAlchemy integration, it includes common scenarios

docs/dataframe.rst

@@ -240,8 +240,8 @@ pandas implementation introduced in the previous section.
 .. _Dask: https://en.wikipedia.org/wiki/Dask_(software)
 .. _DataFrame computing: https://realpython.com/pandas-dataframe/
 .. _ETL: https://en.wikipedia.org/wiki/Extract,_transform,_load
-.. _insert_dask.py: https://github.com/crate/cratedb-examples/blob/main/by-language/python-sqlalchemy/insert_dask.py
-.. _insert_pandas.py: https://github.com/crate/cratedb-examples/blob/main/by-language/python-sqlalchemy/insert_pandas.py
+.. _insert_dask.py: https://github.com/crate/cratedb-examples/blob/main/by-dataframe/dask/insert_dask.py
+.. _insert_pandas.py: https://github.com/crate/cratedb-examples/blob/main/by-dataframe/pandas/insert_pandas.py
 .. _leveling up to 200_000: https://acepor.github.io/2017/08/03/using-chunksize/
 .. _NumPy: https://en.wikipedia.org/wiki/NumPy
 .. _pandas: https://en.wikipedia.org/wiki/Pandas_(software)

docs/inspection-reflection.rst

@@ -1,8 +1,8 @@
 .. _inspection-reflection:
 
-=========================================
-Database schema inspection and reflection
-=========================================
+=========================
+Inspection and Reflection
+=========================
 
 This section shows you how to inspect the schema of a database using CrateDB's
 SQLAlchemy integration.

docs/working-with-types.rst

@@ -1,8 +1,8 @@
 .. _working-with-types:
 
-==================================
-Working with special CrateDB types
-==================================
+==========
+Data Types
+==========
 
 This section of the documentation shows how to work with special data types
 from the CrateDB SQLAlchemy dialect. Currently, these are: