docs: added dot_product.md back to examples list

Author: mxpoch

docs/make.jl

@@ -11,6 +11,7 @@ makedocs(;
       "examples/matrix_multiplication.md",
       "examples/array_interface.md",
       "examples/matrix_vector_ops.md",
+      "examples/dot_product.md",
       "examples/datetime_arrays.md",
       "examples/special_functions.md",
       "examples/sum_of_squared_error.md",