Update docs/src/catalyst_applications/bifurcation_diagrams.md

Co-authored-by: Sam Isaacson <[email protected]>

Author: TorkelE

docs/src/catalyst_applications/bifurcation_diagrams.md

@@ -23,7 +23,7 @@ Next we will create a `BifurcationProblem`. In addition to the `ReactionSystem`,
 - An initial guess of the steady state values of the system at the provided parameter set. Using this point as a starting guess for root finding, BifurcationKit calculates an initial steady state from which to compute the bifurcation diagram. Hence, this guess does not need to be very exact (but may be important if the system exhibits multistability for the initial parameter set).
 - The species or statistic we wish to plot on the y-axis of the bifurcation diagram (a custom value can be provided by using the [`record_from_solution` argument](https://bifurcationkit.github.io/BifurcationKitDocs.jl/stable/periodicOrbit/#.-record*from*solution)).
 
-We combines all this information to form a `BifurcationProblem`:
+We combine all this information to form a `BifurcationProblem`:
 ```@example ex1
 using BifurcationKit
 bif_par = :k1