docs: Fix spelling errors in code comments

[shbhmexe]

Proposed Changes

This PR fixes spelling errors in code comments to improve documentation clarity and professionalism.

Files Modified:

• Common/src/geometry/CPhysicalGeometry.cpp - Fixed 5 typos
• Common/include/geometry/primal_grid/CPrimalGrid.hpp - Fixed 1 typo
• SU2_CFD/src/variables/CMeshVariable.cpp - Fixed 1 typo
• SU2_CFD/src/solvers/CGradientSmoothingSolver.cpp - Fixed 1 typo

Corrections Made:

Typo	Correction	File	Line
genral	general	CPhysicalGeometry.cpp	4778
caount	count	CPhysicalGeometry.cpp	4795
Initilize	Initialize	CPhysicalGeometry.cpp	4781
Initalize	Initialize	CMeshVariable.cpp	37
initalize	initialize	CGradientSmoothingSolver.cpp	96
surronding	surrounding	CPhysicalGeometry.cpp	4669
surronding	surrounding	CPrimalGrid.hpp	52
Localice	Localize	CPhysicalGeometry.cpp	4645

Rationale:

• Ensures correct spelling in all code documentation
• Improves code professionalism and readability
• No behavior or API changes
• Comment-only modifications with zero functional impact

Related Work

None. This is a minimal documentation/spelling fix isolated to code comments.

PR Checklist

• I am submitting my contribution to the develop branch.
• My contribution generates no new compiler warnings (header-only comment change).
• My contribution is commented and consistent with SU2 style (https://su2code.github.io/docs_v7/Style-Guide/).
• I used the pre-commit hook to prevent dirty commits and used pre-commit run --all to format old commits.
• I have updated appropriate documentation if necessary (not applicable).

Impact

Functionality: unchanged.

Performance/Memory: unchanged.

CI: should have no effect on ASAN/TSAN builds and regression/unit tests because no logic changed.

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Confirmation

✅ This change does NOT break any existing functionality

This is a documentation-only change that corrects spelling errors in 8 code comments across 4 files. The fixes:

• Do not modify any executable code
• Do not change any function signatures or APIs
• Do not affect build process or compilation
• Do not require any test updates
• Have zero impact on runtime behavior

All changes are comment-only modifications that maintain the repository's current behavior while improving documentation quality and professionalism.

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Summary Statistics

Metric	Value
Files Changed	4
Typos Fixed	8
Lines Modified	8
Type	Documentation/Comments only
Functional Impact	None

[shbhmexe]

/label changelog:fix