Fix spelling issues

src/starkware/air/components/bit_unpacking/bit_unpacking.h

@@ -71,7 +71,7 @@ class BitUnpackingComponent {
   std::vector<size_t> bits_;
 
   /*
-    The columns representing the cumulative products of bits.
+    The columns represent the cumulative products of bits.
   */
   std::vector<VirtualColumn> cumulative_bit_columns_;
 };

src/starkware/air/components/diluted_check/diluted_check_cell.inl

@@ -43,7 +43,7 @@ void DilutedCheckCell<FieldElementT>::Finalize(gsl::span<const gsl::span<FieldEl
   // Fill missing values.
   // current_value refers to the maximum value in the range [0, 2^n_bits) for which we know that all
   // previous values appear in the trace in diluted form.
-  // At the beginnin, we know of no value, so we initialize it with 0.
+  // At the beginning, we know of no value, so we initialize it with 0.
   uint64_t current_value = 0;
   uint64_t filled_missings = 0;
   for (uint64_t i = 0; i < this->values_.size(); ++i) {

src/starkware/air/components/diluted_check/diluted_check_cell_test.cc

@@ -91,7 +91,7 @@ TEST_F(DilutedCheckCellTest, AllInitialized) {
 
   EXPECT_ASSERT(
       diluted_cell.Finalize(SpanAdapter(trace)),
-      HasSubstr("Trace size is not large enough for dilluted-check values. Filled "
+      HasSubstr("Trace size is not large enough for diluted-check values. Filled "
                 "missing values: 32768. Remaining missing values: 8192."));
 }