chore: fix some typos in comments

Signed-off-by: alwayshang <zhanghonghao@outlook.com>

slither/detectors/compiler_bugs/reused_base_constructor.py

@@ -35,7 +35,7 @@ class ReusedBaseConstructor(AbstractDetector):
     ARGUMENT = "reused-constructor"
     HELP = "Reused base constructor"
     IMPACT = DetectorClassification.MEDIUM
-    # The confidence is medium, because prior Solidity 0.4.22, we cant differentiate
+    # The confidence is medium, because prior Solidity 0.4.22, we can't differentiate
     # contract C is A() {
     # to
     # contract C is A {

slither/solc_parsing/declarations/contract.py

@@ -593,7 +593,7 @@ class ContractSolc(CallerContextExpression):
     def analyze_constant_state_variables(self) -> None:
         for var_parser in self._variables_parser:
             if var_parser.underlying_variable.is_constant:
-                # cant parse constant expression based on function calls
+                # can't parse constant expression based on function calls
                 try:
                     var_parser.analyze(self)
                 except (VariableNotFound, KeyError) as e:

tests/unit/core/test_source_mapping.py

@@ -58,7 +58,7 @@ def test_source_mapping_inheritance(solc_binary_path, solc_version):
     assert {(x.start, x.end) for x in slither.offset_to_implementations(file, 203)} == {(193, 230)}
 
     # Offset 93 is the call to f() in A.test()
-    # This can lead to three differents functions, depending on the current contract's context
+    # This can lead to three different functions, depending on the current contract's context
     functions = slither.offset_to_objects(file, 93)
     print(functions)
     assert len(functions) == 3

tests/unit/slithir/test_data/ternary_expressions.sol

@@ -6,7 +6,7 @@ contract C {
     // TODO
     // 1) support variable declarations
     //uint min = 1 > 0 ? 1 : 2;
-    // 2) suppory ternary index range access
+    // 2) support ternary index range access
     // function e(bool cond, bytes calldata x) external {
     //     bytes memory a = x[cond ? 1 : 2 :];
     // }

tests/unit/slithir/test_ssa_generation.py

@@ -502,7 +502,7 @@ def test_storage_refers_to(slither_from_solidity_source):
     When a phi-node is created, ensure refers_to is propagated to the phi-node.
     Assignments also propagate refers_to.
     Whenever a ReferenceVariable is the destination of an assignment (e.g. s.v = 10)
-    below, create additional versions of the variables it refers to record that a a
+    below, create additional versions of the variables it refers to record that a
     write was made. In the current implementation, this is referenced by phis.
     """
     source = """
@@ -550,7 +550,7 @@ def test_storage_refers_to(slither_from_solidity_source):
         entryphi = [x for x in phinodes if x.lvalue in sphi.lvalue.refers_to]
         assert len(entryphi) == 2
 
-        # The remaining two phis are the ones recording that write through ReferenceVariable occured
+        # The remaining two phis are the ones recording that write through ReferenceVariable occurred
         for ephi in entryphi:
             phinodes.remove(ephi)
         phinodes.remove(sphi)