typos in systems docs

Author: Datseris

src/continuous_famous_systems.jl

@@ -220,7 +220,7 @@ end
 
 
 """
-    qbh(u0=[]; A=1., B=0.55, D=0.4)
+    qbh([u0]; A=1.0, B=0.55, D=0.4)
 
 ```math
 \\begin{aligned}
@@ -231,8 +231,8 @@ end
 \\end{aligned}
 ```
 
-These equations of motion correspond to a Hamiltonian used [1,2] in nuclear
-physics to study the quadrupole vibrations of the nuclear surface.
+These equations of motion correspond to a Hamiltonian used in nuclear
+physics to study the quadrupole vibrations of the nuclear surface [1,2].
 
 ```math
 H(p_0, p_2, q_0, q_2) = \\frac{A}{2}\\left(p_0^2+p_2^2\\right)+\\frac{A}{2}\\left(q_0^2+q_2^2\\right)
@@ -244,7 +244,9 @@ and presents a nontrivial dependence of chaoticity with the increase of energy [
 The default initial condition is chaotic.
 
 [1]: Eisenberg, J.M., & Greiner, W., Nuclear theory 2 rev ed. Netherlands: North-Holland pp 80 (1975)
+
 [2]: Baran V. and Raduta A. A., International Journal of Modern Physics E, **7**, pp 527--551 (1998)
+
 [3]: Micluta-Campeanu S., Raportaru M.C., Nicolin A.I., Baran V., Rom. Rep. Phys. **70**, pp 105 (2018)
 """
 function qbh(u0=[0., -2.5830294658973876, 1.3873470962626937, -4.743416490252585];  A=1., B=0.55, D=0.4)
@@ -418,7 +420,7 @@ nosehoover(u0 = [0, 0.1, 0])
 \\begin{aligned}
 \\dot{x} &= y \\\\
 \\dot{y} &= yz - x \\\\
-\\dot{V} &= 1 - y^2
+\\dot{z} &= 1 - y^2
 \\end{aligned}
 ```
 Three dimensional conservative continuous system, taken from the book