minor change for symExecTimeout comments (#1285)

Author: samalws-tob

lib/Echidna/Types/Campaign.hs

@@ -51,7 +51,7 @@ data CampaignConf = CampaignConf
     -- Only relevant if symExec is True
   , symExecTargets     :: Maybe [Text]
   , symExecTimeout     :: Int
-    -- ^ Timeout for symbolic execution SMT solver.
+    -- ^ Timeout for symbolic execution SMT solver queries.
     -- Only relevant if symExec is True
   , symExecNSolvers    :: Int
     -- ^ Number of SMT solvers used in symbolic execution.

tests/solidity/basic/default.yaml

@@ -101,7 +101,7 @@ symExecConcolic: true
 # number of SMT solvers used in symbolic execution
 # only relevant if symExec is true
 symExecNSolvers: 1
-# timeout for symbolic execution SMT solver
+# timeout for symbolic execution SMT solver queries
 # only relevant if symExec is true
 symExecTimeout: 30
 # Number of times we may revisit a particular branching point