Fix typos

Signed-off-by: beorn7 <beorn@grafana.com>

tsdb/chunkenc/histogram_meta.go

@@ -100,7 +100,7 @@ func readHistogramChunkLayoutSpans(b *bstreamReader) ([]histogram.Span, error) {
 //   in IEEE 754 representation, and 2^10 is 0.5*2^11.) Add 243 to the exponent
 //   and store the result (which will be between 1 and 254) as a single
 //   byte. Note that small powers of two are preferred values for the zero
-//   threshould. The default value for the zero threshold is 2^-128 (or
+//   threshold. The default value for the zero threshold is 2^-128 (or
 //   0.5*2^-127 in IEEE 754 representation) and will therefore be encoded as a
 //   single byte (with value 116).
 //

tsdb/docs/format/chunks.md

@@ -55,7 +55,7 @@ Notes:
 * `<varint>` and `<uvarint>` have 1 to 10 bytes each.
 * `ts_1_delta` is `ts_1` – `ts_0`.
 * `ts_n_dod` is the “delta of deltas” of timestamps, i.e. (`ts_n` – `ts_n-1`) – (`ts_n-1` – `ts_n-2`).
-* `v_n_xor>` is the result of `v_n` XOR `v_n-1`.
+* `<v_n_xor>` is the result of `v_n` XOR `v_n-1`.
 * `<varbit_xor>` is a specific variable bitwidth encoding of the result of XORing the current and the previous value. It has between 1 bit and 77 bits.
   See [code for details](https://github.com/prometheus/prometheus/blob/7309c20e7e5774e7838f183ec97c65baa4362edc/tsdb/chunkenc/xor.go#L220-L253).
 * `<varbit_ts>` is a specific variable bitwidth encoding for the “delta of deltas” of timestamps (signed integers that are ideally small).