- leave /guides/upgrade as symlink

upgrade/v1706-User-Upgrade-Guide.md

+<!-- --- title: User Upgrade Guide (OpenFOAM-v1706) -->
+
+[![home](/icons/home.svg "wiki home")](/home)
+[![upgrade](/icons/chevrons-up.svg "upgrade guide")][upgrade-guide]
+[![code](/icons/code.svg "coding patterns")][code-patterns]
+
+[[_TOC_]]
+
+## Turbulence
+
+The `omegaWallFunction` was updated to replicate v1606+ behaviour via the blended keyword. For more information, see commit ef0361f7
+
+## Heat transfer
+
+The `nMoles` entry is no longer required in the `thermophysicalProperties` dictionary
+
+Heat flux field names have been updated to use a lower case `q`, e.g. radiative heat flux field name `Qr` to `qr`
+
+The `externalWallHeatFluxTemperature` boundary condition now requires a `mode` entry to state the mode of operation
+
+## Function objects
+
+ALL: the `evaluateControl` entry was renamed `executeControl`
+
+`runTimePostProcessing`: camera input changed (bug fix to the `clipBox` entry)
+
+## Utilities
+### noise
+Inputs in the `$FOAM_CASE/noiseDict` dictionary were updated:
+
+* change in syntax for input specification
+* `inputFiles` entry renamed to `files`
+* `inputFile` entry renamed to `file`
+* for the `pointNoise` model the `csvFileData` sub-dictionary was removed
+
+See source documentation in $FOAM_SRC/randomProcesses/noise/noiseModels
+
+
+[code-patterns]: /coding/patterns/patterns
+[upgrade-guide]: /upgrade/upgrade
+
+[v1706-notes]: https://www.openfoam.com/releases/openfoam-v1706/