Merge branch 'docu-fix' into 'master'

[docu] tiny bracket fixes

See merge request ogs/ogs!5186

MaterialLib/MPL/Properties/Density/WaterVapourDensity.h

@@ -26,7 +26,7 @@ class Phase;
  *   \f]
  *  where \f$h\f$ is the relative humidity according to
  *   \f[
- *     h=\exp({\frac{p}{\rho_w R T}}),
+ *     h=\exp \left({\frac{p}{\rho_w R T}}\right),
  *   \f]
  *
  *  with \f$R\f$ the specific gas constant for water vapour, and

MaterialLib/MPL/Properties/Exponential.h

@@ -26,8 +26,8 @@ struct ExponentData
 /// An exponential property.
 ///
 /// This property calculates the exponential relationship \f$ \alpha(\beta) =
-/// \alpha_{\mathrm{offset}} + \alpha_{\mathrm{ref}} \cdot \exp (m (\beta -
-/// \beta_{\mathrm{ref}})\f$, where:
+/// \alpha_{\mathrm{offset}} + \alpha_{\mathrm{ref}} \cdot \exp \left(m (\beta -
+/// \beta_{\mathrm{ref}})\right)\f$, where:
 ///  - \f$\alpha_{\mathrm{ref}}\f$ is a reference value, for instance reference
 ///    viscosity,
 ///  - \f$\alpha_{\mathrm{offset}}\f$ is additive offset in units of the

MaterialLib/MPL/Properties/VapourDiffusion/VapourDiffusionDeVries.h

@@ -24,9 +24,9 @@ class Phase;
  *
  *  The vapour diffusion can be described by
  *  \f[
- *     D_v=5.9\cdot 10^{-6} \left(\frac{T, \text{in K}}{p, \text{in
- * Pa}}\right)^{2.3} D_{vr}, \f] where \f$D_{vr}\f$ is the the relative
- * diffusion coefficient, and \f$T\f$ is the temperature.
+ *     D_v=5.9\cdot 10^{-6} \frac{\left(T\, \text{in K}\right)^{2.3}}{p,
+ * \text{in Pa}} D_{vr}, \f] where \f$D_{vr}\f$ is the the relative diffusion
+ * coefficient, and \f$T\f$ is the temperature.
  *
  */
 class VapourDiffusionDeVries final : public Property