Per #2278, fix wording.

docs/Users_Guide/reformat_point.rst

@@ -222,7 +222,7 @@ _____________________
 Each PrepBUFR message will likely contain multiple observation variables. The **obs_bufr_var** variable is used to specify which observation variables should be retained or derived. The observation variable names are retrieved from the BUFR table embedded within the file. Users can run PB2NC with the **-index** command line argument to list out the variable names present in the file, and those names can be listed in this setting. If the list is empty, all BUFR variables present in the file are retained. This setting replaces the deprecated **obs_grib_code**.
 
 
-The example **obs_bufr_var** setting above retains observations of QOB, TOB, ZOB, UOB, and VOB for specific humidity, temperature, height, and the u and v components of winds. Observations of those types are reported at the corresponding POB pressure level. In addition, PB2NC can derive the several other variables from these observations. By convention, all observations that are derivable are named with a **D_** prefix:
+The example **obs_bufr_var** setting above retains observations of QOB, TOB, ZOB, UOB, and VOB for specific humidity, temperature, height, and the u and v components of winds. Observations of those types are reported at the corresponding POB pressure level. In addition, PB2NC can derive several other variables from these observations. By convention, all observations that are derivable are named with a **D_** prefix:
 
 • **D_DPT** for dew point (from POB and QOB)
 
@@ -243,7 +243,7 @@ The example **obs_bufr_var** setting above retains observations of QOB, TOB, ZOB
 • **D_MLCAPE** for mixed layer convective available potential energy (from POB, QOB, and TOB)
 
 
-In BUFR data, lower quality mark values indicate higher quality observations. The quality marks for derived observations are computed as the maximum of the quality marks for its components. For example, **D_DPT** derived from **POB** with quality mark 1 and **QOB** with quality mark 2 is assigned a quality mark value of 2. **D_DBL**, **D_CAPE**, and **D_MLCAPE** are derived using data from multiple vertical levels. However, their quality marks are computed as the maximum of their components only at the first vertical level.
+In BUFR, lower quality mark values indicate higher quality observations. The quality marks for derived observations are computed as the maximum of the quality marks for its components. For example, **D_DPT** derived from **POB** with quality mark 1 and **QOB** with quality mark 2 is assigned a quality mark value of 2. **D_DBL**, **D_CAPE**, and **D_MLCAPE** are derived using data from multiple vertical levels. However, their quality marks are computed as the maximum of their components only at the first vertical level.
 
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