Fix typos found by codespell

Author: DimitriPapadopoulos

jdatadecode.m

@@ -44,7 +44,7 @@
 %                         please set FormatVersion to 1
 %
 % output:
-%      newdata: the covnerted data if the input data does contain a JData 
+%      newdata: the converted data if the input data does contain a JData 
 %               structure; otherwise, the same as the input.
 %
 % examples:

jload.m

@@ -18,7 +18,7 @@
 %           JSON/JData file will be expected; if the suffix is '.pmat' or
 %           '.jdb', a Binary JData file will be expected.
 %      opt: (optional) a struct to store parsing options, opt can be replaced by 
-%           a list of ('param',value) pairs - the param string is equivallent
+%           a list of ('param',value) pairs - the param string is equivalent
 %           to a field in opt. opt can have the following 
 %           fields (first in [.|.] is the default)
 %

jsave.m

@@ -16,7 +16,7 @@
 %           JSON/JData file will be created (slow); if the suffix is '.pmat' or
 %           '.jdb', a Binary JData (https://github.com/NeuroJSON/bjdata/) file will be created.
 %      opt: (optional) a struct to store parsing options, opt can be replaced by 
-%           a list of ('param',value) pairs - the param string is equivallent
+%           a list of ('param',value) pairs - the param string is equivalent
 %           to a field in opt. opt can have the following 
 %           fields (first in [.|.] is the default)
 %

loadbj.m

@@ -21,7 +21,7 @@
 %      fname: input file name, if fname contains "{}" or "[]", fname
 %             will be interpreted as a BJData/UBJSON string
 %      opt: a struct to store parsing options, opt can be replaced by 
-%           a list of ('param',value) pairs - the param string is equivallent
+%           a list of ('param',value) pairs - the param string is equivalent
 %           to a field in opt. opt can have the following 
 %           fields (first in [.|.] is the default)
 %

loadjson.m

@@ -22,7 +22,7 @@
 %      fname: input file name; if fname contains "{}" or "[]", fname
 %             will be interpreted as a JSON string
 %      opt: (optional) a struct to store parsing options, opt can be replaced by 
-%           a list of ('param',value) pairs - the param string is equivallent
+%           a list of ('param',value) pairs - the param string is equivalent
 %           to a field in opt. opt can have the following 
 %           fields (first in [.|.] is the default)
 %

loadubjson.m

@@ -16,7 +16,7 @@
 %             be read, otherwise, this function will attempt to parse the
 %             string in fname as a UBJSON stream
 %      opt: a struct to store parsing options, opt can be replaced by 
-%           a list of ('param',value) pairs - the param string is equivallent
+%           a list of ('param',value) pairs - the param string is equivalent
 %           to a field in opt. The supported options can be found by typing
 %           "help loadbj".
 %

savebj.m

@@ -131,7 +131,7 @@
 %                         the input data before saving
 %
 %        opt can be replaced by a list of ('param',value) pairs. The param 
-%        string is equivallent to a field in opt and is case sensitive.
+%        string is equivalent to a field in opt and is case sensitive.
 % output:
 %      bjd: a binary string in the UBJSON format (see http://ubjson.org)
 %

savejson.m

@@ -110,7 +110,7 @@
 %                         this function falls back to the jsonlab savejson
 %
 %        opt can be replaced by a list of ('param',value) pairs. The param
-%        string is equivallent to a field in opt and is case sensitive.
+%        string is equivalent to a field in opt and is case sensitive.
 % output:
 %      json: a string in the JSON format (see http://json.org)
 %

saveubjson.m

@@ -38,7 +38,7 @@
 %           opt can have the following fields (first in [.|.] is the default)
 %
 %           opt can be replaced by a list of ('param',value) pairs. The param 
-%           string is equivallent to a field in opt and is case sensitive.
+%           string is equivalent to a field in opt and is case sensitive.
 %
 %           Please type "help savebj" for details for all supported options.
 %