Fixed typos

[jimgrundy]

• Each commit message has a non-empty body, explaining why the change was made.
• Methods or procedures I have added are documented, following the guidelines provided in CODING_STANDARD.md.
• The feature or user visible behaviour I have added or modified has been documented in the User Guide in doc/cprover-manual/
• Regression or unit tests are included, or existing tests cover the modified code (in this case I have detailed which ones those are in the commit message).
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[codecov]

Codecov Report

Merging #6481 (f5789d0) into develop (eeb1372) will increase coverage by 0.02%.
The diff coverage is 91.12%.

@@             Coverage Diff             @@
##           develop    #6481      +/-   ##
===========================================
+ Coverage    76.01%   76.04%   +0.02%     
===========================================
  Files         1546     1546              
  Lines       165394   165485      +91     
===========================================
+ Hits        125723   125836     +113     
+ Misses       39671    39649      -22     

Impacted Files	Coverage Δ
...solvers/smt2_incremental/smt_response_validation.h	100.00% <ø> (ø)
src/solvers/smt2_incremental/smt_solver_process.h	100.00% <ø> (+33.33%)	⬆️
...rc/solvers/smt2_incremental/smt_solver_process.cpp	74.07% <50.00%> (+49.07%)	⬆️
...ncremental/smt2_incremental_decision_procedure.cpp	96.15% <95.29%> (+0.15%)	⬆️
...ncremental/smt2_incremental_decision_procedure.cpp	89.68% <96.29%> (+11.25%)	⬆️
src/goto-checker/solver_factory.cpp	77.88% <0.00%> (+1.38%)	⬆️
src/goto-symex/ssa_step.cpp	81.37% <0.00%> (+2.06%)	⬆️
src/util/piped_process.cpp	80.76% <0.00%> (+3.84%)	⬆️
... and 2 more

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