[fixer-selftest] Fix comment typo in elim_unconstrained.cpp (accomodate → accommodate) (#9925)

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### Change
- **File:** `src/ast/simplifiers/elim_unconstrained.cpp` (module-header
`/*++ ... */` comment)
- **Before:** `   - it does not accomodate side constraints.`
- **After:** `   - it does not accommodate side constraints.`

A plain spelling correction in a comment: `accomodate` → `accommodate`.
The diff is a single line.

### Why this is safe
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src/ast/simplifiers/elim_unconstrained.cpp

@@ -16,7 +16,7 @@ Abstract:
      All variables x, y, z, .. can eventually be eliminated, but the tactic requires a global 
      analysis between each elimination. We address this by using reference counts and maintaining
      a heap of reference counts.
-   - it does not accomodate side constraints. The more general invertibility reduction methods, such 
+   - it does not accommodate side constraints. The more general invertibility reduction methods, such 
      as those introduced for bit-vectors use side constraints.
    - it is not modular: we detach the expression invertion routines to self-contained code.