In documentation section https://docs.blender.org/manual/en/dev/editors/3dview/object/editing/introduction.html
Paragraph Convert to https://docs.blender.org/manual/en/dev/editors/3dview/object/editing/introduction.html#convert-to
Instead of Curve to Mesh/Text - should be Mesh/Text to Curve.
Instead of Mesh to Curve/Metaball/Surface/Text - should be Curve/Metaball/Surface/Text to Mesh.