Update docs/src/tutorials/pino_ode.md

Co-authored-by: Sathvik Bhagavan <35105271+sathvikbhagavan@users.noreply.github.com>

docs/src/tutorials/pino_ode.md

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-# Physics Informed Neural Operator for ODEs Solvers
+# Physics Informed Neural Operator for ODEs
 
 This tutorial provides an example of how to use the Physics Informed Neural Operator (PINO) for solving a family of parametric ordinary differential equations (ODEs).